広島地方気象台における1989年から2012年までの、月別の全天日射量と斜面日射量の関係を計算した結果を示します。●全天日射量と斜面日射量（1989〜2011年）
・計算式は−＞ Erbs計算式
・全天： 全天日射量
・斜０： 全天日射量にNEDO（MONSOLA)1961-1990年平均の月別斜面日射量/全天日射量比を
乗じて求めた斜面日射量（傾斜角30度、方位30度）
・斜 E： Erbsモデルにより計算された斜面日射量
・日射量の単位は kWh/m2
表から次のことが分かります。
・比「斜E/斜０」の月毎の値は年によって若干異なりますが、ほぼ同じ傾向を示しています。
・従来（通常）の斜面日射量（斜０）に対して、Erbsモデルによる斜面日射量（斜E）の値は
春〜夏： ほぼ同じ
秋〜冬： 5〜10% 程度低い
・傾斜角/方位の 28.8度/25度 と 30度/30度 による斜面日射量の差は１％程度です。
●傾斜角/方位： 28.8度/25度 と 30度/30度 による斜面日射量（斜E）の比較（1990〜2011年の平均）（注）ErbsモデルおよびMETPV-3モデルにおける斜面日射量の計算式では、夕方など高度角0度付近で
albedo = 0.2
屋根傾斜 28.8°
方位 25°（南南西）albedo = 0.2
屋根傾斜 30.0°
方位 30°（南南西）年 月 日 全天 斜０ 斜 E 斜０/全天 斜E/全天 斜E/斜０ 全天 斜０ 斜 E 斜０/全天 斜E/全天 斜E/斜０ 1989 1 31 2 28 3 31 4 30 137.40 140.32 138.04 1.021 1.005 0.984 137.40 140.32 137.15 1.021 0.998 0.977 5 31 139.98 132.76 134.21 0.948 0.959 1.011 139.98 132.76 133.53 0.948 0.954 1.006 6 30 139.45 128.47 130.54 0.921 0.936 1.016 139.45 128.47 129.72 0.921 0.930 1.010 7 31 159.05 148.34 151.42 0.933 0.952 1.021 159.05 148.34 150.64 0.933 0.947 1.016 8 31 145.61 143.43 143.37 0.985 0.985 1.000 145.61 143.43 142.57 0.985 0.979 0.994 9 30 100.46 106.67 103.82 1.062 1.033 0.973 100.46 106.67 103.14 1.062 1.027 0.967 10 31 111.51 135.07 126.71 1.211 1.136 0.938 111.51 135.07 125.57 1.211 1.126 0.930 11 30 75.50 101.26 89.11 1.341 1.180 0.880 75.50 101.26 88.31 1.341 1.170 0.872 12 31 70.29 100.33 87.52 1.427 1.245 0.872 70.29 100.33 86.88 1.427 1.236 0.866 1990 1 31 65.86 90.13 79.87 1.369 1.213 0.886 65.86 90.13 79.04 1.369 1.200 0.877 2 28 67.13 83.44 77.39 1.243 1.153 0.927 67.13 83.44 76.93 1.243 1.146 0.922 3 31 114.57 128.12 122.92 1.118 1.073 0.959 114.57 128.12 121.93 1.118 1.064 0.952 4 30 139.54 142.50 142.45 1.021 1.021 1.000 139.54 142.50 142.06 1.021 1.018 0.997 5 31 162.11 153.75 155.35 0.948 0.958 1.010 162.11 153.75 154.53 0.948 0.953 1.005 6 30 149.49 137.72 138.90 0.921 0.929 1.009 149.49 137.72 137.97 0.921 0.923 1.002 7 31 168.34 157.01 161.01 0.933 0.956 1.025 168.34 157.01 160.23 0.933 0.952 1.021 8 31 179.25 176.57 176.12 0.985 0.983 0.997 179.25 176.57 174.70 0.985 0.975 0.989 9 30 102.72 109.07 106.13 1.062 1.033 0.973 102.72 109.07 105.48 1.062 1.027 0.967 10 31 96.94 117.42 109.87 1.211 1.133 0.936 96.94 117.42 108.91 1.211 1.123 0.928 11 30 80.69 108.23 100.06 1.341 1.240 0.925 80.69 108.23 99.22 1.341 1.230 0.917 12 31 70.65 100.84 92.58 1.427 1.310 0.918 70.65 100.84 91.72 1.427 1.298 0.910 1991 1 31 72.20 98.80 89.42 1.368 1.239 0.905 72.20 98.80 88.80 1.368 1.230 0.899 2 28 80.92 100.58 95.22 1.243 1.177 0.947 80.92 100.58 94.52 1.243 1.168 0.940 3 31 105.11 117.54 114.71 1.118 1.091 0.976 105.11 117.54 113.86 1.118 1.083 0.969 4 30 132.42 135.23 133.65 1.021 1.009 0.988 132.42 135.23 132.69 1.021 1.002 0.981 5 31 131.16 124.40 125.99 0.948 0.961 1.013 131.16 124.40 125.38 0.948 0.956 1.008 6 30 106.66 98.26 99.21 0.921 0.930 1.010 106.66 98.26 98.44 0.921 0.923 1.002 7 31 128.49 119.84 121.18 0.933 0.943 1.011 128.49 119.84 120.39 0.933 0.937 1.005 8 31 151.06 148.81 148.18 0.985 0.981 0.996 151.06 148.81 147.27 0.985 0.975 0.990 9 30 121.75 129.28 126.49 1.062 1.039 0.978 121.75 129.28 125.71 1.062 1.033 0.972 10 31 105.08 127.28 119.17 1.211 1.134 0.936 105.08 127.28 118.39 1.211 1.127 0.930 11 30 84.54 113.39 105.52 1.341 1.248 0.931 84.54 113.39 104.71 1.341 1.239 0.923 12 31 66.13 94.38 84.42 1.427 1.277 0.894 66.13 94.38 83.74 1.427 1.266 0.887 1992 1 31 66.57 91.10 79.72 1.368 1.198 0.875 66.57 91.10 78.98 1.368 1.186 0.867 2 29 84.74 105.33 99.80 1.243 1.178 0.947 84.74 105.33 99.33 1.243 1.172 0.943 3 31 89.55 100.14 94.33 1.118 1.053 0.942 89.55 100.14 93.51 1.118 1.044 0.934 4 30 145.24 148.33 146.76 1.021 1.010 0.989 145.24 148.33 145.94 1.021 1.005 0.984 5 31 158.56 150.38 151.05 0.948 0.953 1.004 158.56 150.38 150.06 0.948 0.946 0.998 6 30 155.80 143.53 145.37 0.921 0.933 1.013 155.80 143.53 144.28 0.921 0.926 1.005 7 31 156.53 145.99 149.20 0.933 0.953 1.022 156.53 145.99 148.24 0.933 0.947 1.015 8 31 127.67 125.76 125.74 0.985 0.985 1.000 127.67 125.76 125.07 0.985 0.980 0.995 9 30 125.16 132.90 130.05 1.062 1.039 0.979 125.16 132.90 129.00 1.062 1.031 0.971 10 31 115.83 140.30 133.93 1.211 1.156 0.955 115.83 140.30 133.07 1.211 1.149 0.948 11 30 75.32 101.02 90.51 1.341 1.202 0.896 75.32 101.02 89.89 1.341 1.193 0.890 12 31 59.89 85.48 74.02 1.427 1.236 0.866 59.89 85.48 73.52 1.427 1.228 0.860 1993 1 31 62.34 85.30 74.16 1.368 1.190 0.869 62.34 85.30 73.26 1.368 1.175 0.859 2 28 79.43 98.73 93.33 1.243 1.175 0.945 79.43 98.73 92.90 1.243 1.170 0.941 3 31 120.75 135.03 130.17 1.118 1.078 0.964 120.75 135.03 129.01 1.118 1.068 0.955 4 30 146.29 149.39 148.84 1.021 1.017 0.996 146.29 149.39 148.09 1.021 1.012 0.991 5 31 143.94 136.52 138.04 0.948 0.959 1.011 143.94 136.52 137.44 0.948 0.955 1.007 6 30 112.65 103.78 106.29 0.921 0.944 1.024 112.65 103.78 105.78 0.921 0.939 1.019 7 31 118.99 110.99 112.19 0.933 0.943 1.011 118.99 110.99 111.40 0.933 0.936 1.004 8 31 105.76 104.18 104.48 0.985 0.988 1.003 105.76 104.18 103.92 0.985 0.983 0.998 9 30 106.45 113.03 110.74 1.062 1.040 0.980 106.45 113.03 110.03 1.062 1.034 0.973 10 31 103.78 125.71 117.69 1.211 1.134 0.936 103.78 125.71 116.92 1.211 1.127 0.930 11 30 59.43 79.71 69.16 1.341 1.164 0.868 59.43 79.71 68.77 1.341 1.157 0.863 12 31 68.80 98.19 89.00 1.427 1.294 0.906 68.80 98.19 88.20 1.427 1.282 0.898 1994 1 31 71.56 97.93 87.75 1.369 1.226 0.896 71.56 97.93 86.61 1.369 1.210 0.884 2 28 79.38 98.67 93.07 1.243 1.172 0.943 79.38 98.67 92.67 1.243 1.167 0.939 3 31 120.47 134.72 128.92 1.118 1.070 0.957 120.47 134.72 127.74 1.118 1.060 0.948 4 30 134.71 137.57 136.69 1.021 1.015 0.994 134.71 137.57 135.85 1.021 1.008 0.987 5 31 168.09 159.42 159.30 0.948 0.948 0.999 168.09 159.42 158.15 0.948 0.941 0.992 6 30 151.35 139.43 141.25 0.921 0.933 1.013 151.35 139.43 140.33 0.921 0.927 1.006 7 31 198.52 185.16 186.68 0.933 0.940 1.008 198.52 185.16 185.29 0.933 0.933 1.001 8 31 181.19 178.48 178.65 0.985 0.986 1.001 181.19 178.48 177.42 0.985 0.979 0.994 9 30 141.01 149.73 148.90 1.062 1.056 0.994 141.01 149.73 147.87 1.062 1.049 0.988 10 31 116.02 140.54 135.95 1.211 1.172 0.967 116.02 140.54 134.92 1.211 1.163 0.960 11 30 84.01 112.67 106.33 1.341 1.266 0.944 84.01 112.67 105.66 1.341 1.258 0.938 12 31 66.96 95.57 86.01 1.427 1.284 0.900 66.96 95.57 85.21 1.427 1.273 0.892 1995 1 31 74.79 102.34 95.15 1.368 1.272 0.930 74.79 102.34 94.02 1.368 1.257 0.919 2 28 91.82 114.13 110.18 1.243 1.200 0.965 91.82 114.13 109.42 1.243 1.192 0.959 3 31 119.78 133.95 131.21 1.118 1.095 0.980 119.78 133.95 130.38 1.118 1.088 0.973 4 30 125.33 127.99 127.56 1.021 1.018 0.997 125.33 127.99 126.75 1.021 1.011 0.990 5 31 159.04 150.84 151.76 0.948 0.954 1.006 159.04 150.84 150.76 0.948 0.948 0.999 6 30 146.89 135.33 137.00 0.921 0.933 1.012 146.89 135.33 136.03 0.921 0.926 1.005 7 31 146.35 136.50 139.69 0.933 0.954 1.023 146.35 136.50 138.96 0.933 0.950 1.018 8 31 177.20 174.55 175.52 0.985 0.991 1.006 177.20 174.55 174.36 0.985 0.984 0.999 9 30 117.94 125.24 121.48 1.062 1.030 0.970 117.94 125.24 120.45 1.062 1.021 0.962 10 31 110.70 134.09 130.76 1.211 1.181 0.975 110.70 134.09 130.00 1.211 1.174 0.969 11 30 85.70 114.94 108.13 1.341 1.262 0.941 85.70 114.94 107.23 1.341 1.251 0.933 12 31 70.39 100.47 89.53 1.427 1.272 0.891 70.39 100.47 88.45 1.427 1.257 0.880 1996 1 31 72.83 99.67 92.52 1.369 1.270 0.928 72.83 99.67 91.73 1.369 1.260 0.920 2 29 90.13 112.03 105.92 1.243 1.175 0.945 90.13 112.03 105.19 1.243 1.167 0.939 3 31 108.40 121.22 116.52 1.118 1.075 0.961 108.40 121.22 115.56 1.118 1.066 0.953 4 30 151.87 155.10 154.52 1.021 1.017 0.996 151.87 155.10 153.74 1.021 1.012 0.991 5 31 164.95 156.45 157.53 0.948 0.955 1.007 164.95 156.45 156.49 0.948 0.949 1.000 6 30 116.51 107.33 109.09 0.921 0.936 1.016 116.51 107.33 108.35 0.921 0.930 1.010 7 31 176.28 164.42 168.40 0.933 0.955 1.024 176.28 164.42 167.64 0.933 0.951 1.020 8 31 154.34 152.03 150.81 0.985 0.977 0.992 154.34 152.03 149.64 0.985 0.970 0.984 9 30 129.01 136.99 135.02 1.062 1.047 0.986 129.01 136.99 134.10 1.062 1.039 0.979 10 31 100.60 121.85 114.70 1.211 1.140 0.941 100.60 121.85 113.94 1.211 1.133 0.935 11 30 71.11 95.38 86.19 1.341 1.212 0.904 71.11 95.38 85.37 1.341 1.201 0.895 12 31 69.29 98.90 89.49 1.427 1.292 0.905 69.29 98.90 88.65 1.427 1.279 0.896 1997 1 31 80.07 109.58 104.40 1.369 1.304 0.953 80.07 109.58 103.15 1.369 1.288 0.941 2 28 86.80 107.89 103.74 1.243 1.195 0.962 86.80 107.89 102.99 1.243 1.187 0.955 3 31 120.59 134.86 131.29 1.118 1.089 0.974 120.59 134.86 130.31 1.118 1.081 0.966 4 30 130.98 133.76 130.93 1.021 1.000 0.979 130.98 133.76 129.85 1.021 0.991 0.971 5 31 146.81 139.24 141.55 0.948 0.964 1.017 146.81 139.24 140.95 0.948 0.960 1.012 6 30 143.59 132.28 133.21 0.921 0.928 1.007 143.59 132.28 132.13 0.921 0.920 0.999 7 31 130.67 121.87 122.96 0.933 0.941 1.009 130.67 121.87 122.14 0.933 0.935 1.002 8 31 152.11 149.84 150.49 0.985 0.989 1.004 152.11 149.84 149.52 0.985 0.983 0.998 9 30 112.15 119.08 116.12 1.062 1.035 0.975 112.15 119.08 115.25 1.062 1.028 0.968 10 31 126.54 153.28 148.60 1.211 1.174 0.969 126.54 153.28 147.62 1.211 1.167 0.963 11 30 76.37 102.43 94.52 1.341 1.238 0.923 76.37 102.43 93.82 1.341 1.228 0.916 12 31 68.06 97.13 86.45 1.427 1.270 0.890 68.06 97.13 85.41 1.427 1.255 0.879 1998 1 31 69.60 95.25 86.99 1.369 1.250 0.913 69.60 95.25 86.06 1.369 1.236 0.904 2 28 78.92 98.10 94.06 1.243 1.192 0.959 78.92 98.10 93.49 1.243 1.185 0.953 3 31 124.67 139.41 134.65 1.118 1.080 0.966 124.67 139.41 133.47 1.118 1.071 0.957 4 30 128.58 131.31 129.57 1.021 1.008 0.987 128.58 131.31 128.56 1.021 1.000 0.979 5 31 149.04 141.36 141.84 0.948 0.952 1.003 149.04 141.36 140.80 0.948 0.945 0.996 6 30 127.12 117.11 118.92 0.921 0.935 1.015 127.12 117.11 118.15 0.921 0.929 1.009 7 31 152.77 142.48 144.17 0.933 0.944 1.012 152.77 142.48 143.16 0.933 0.937 1.005 8 31 155.41 153.09 152.17 0.985 0.979 0.994 155.41 153.09 151.08 0.985 0.972 0.987 9 30 117.96 125.26 121.60 1.062 1.031 0.971 117.96 125.26 120.75 1.062 1.024 0.964 10 31 91.74 111.13 102.13 1.211 1.113 0.919 91.74 111.13 101.27 1.211 1.104 0.911 11 30 83.80 112.40 103.72 1.341 1.238 0.923 83.80 112.40 102.83 1.341 1.227 0.915 12 31 80.06 114.26 108.37 1.427 1.354 0.948 80.06 114.26 107.33 1.427 1.341 0.939 1999 1 31 84.63 115.81 111.32 1.368 1.315 0.961 84.63 115.81 110.17 1.368 1.302 0.951 2 28 94.16 117.04 115.81 1.243 1.230 0.989 94.16 117.04 115.12 1.243 1.223 0.984 3 31 98.55 110.21 104.96 1.118 1.065 0.952 98.55 110.21 104.06 1.118 1.056 0.944 4 30 138.40 141.34 141.27 1.021 1.021 1.000 138.40 141.34 140.87 1.021 1.018 0.997 5 31 181.43 172.07 173.16 0.948 0.954 1.006 181.43 172.07 171.85 0.948 0.947 0.999 6 30 132.48 122.05 122.92 0.921 0.928 1.007 132.48 122.05 122.02 0.921 0.921 1.000 7 31 135.80 126.66 128.46 0.933 0.946 1.014 135.80 126.66 127.83 0.933 0.941 1.009 8 31 141.03 138.93 136.80 0.985 0.970 0.985 141.03 138.93 135.55 0.985 0.961 0.976 9 30 105.34 111.85 108.87 1.062 1.034 0.973 105.34 111.85 108.15 1.062 1.027 0.967 10 31 110.43 133.77 126.77 1.211 1.148 0.948 110.43 133.77 125.77 1.211 1.139 0.940 11 30 80.29 107.69 99.47 1.341 1.239 0.924 80.29 107.69 98.45 1.341 1.226 0.914 12 31 75.39 107.59 99.33 1.427 1.318 0.923 75.39 107.59 98.25 1.427 1.303 0.913 2000 1 31 69.92 95.68 87.63 1.368 1.253 0.916 69.92 95.68 86.78 1.368 1.241 0.907 2 29 92.95 115.53 109.95 1.243 1.183 0.952 92.95 115.53 109.29 1.243 1.176 0.946 3 31 127.99 143.13 143.65 1.118 1.122 1.004 127.99 143.13 142.67 1.118 1.115 0.997 4 30 130.15 132.92 131.75 1.021 1.012 0.991 130.15 132.92 130.94 1.021 1.006 0.985 5 31 166.11 157.55 159.47 0.948 0.960 1.012 166.11 157.55 158.32 0.948 0.953 1.005 6 30 136.31 125.57 129.20 0.921 0.948 1.029 136.31 125.57 128.73 0.921 0.944 1.025 7 31 168.55 157.21 158.63 0.933 0.941 1.009 168.55 157.21 157.62 0.933 0.935 1.003 8 31 167.81 165.31 166.22 0.985 0.991 1.006 167.81 165.31 165.14 0.985 0.984 0.999 9 30 118.88 126.23 124.21 1.062 1.045 0.984 118.88 126.23 123.13 1.062 1.036 0.975 10 31 99.58 120.62 112.09 1.211 1.126 0.929 99.58 120.62 111.35 1.211 1.118 0.923 11 30 74.24 99.58 91.79 1.341 1.236 0.922 74.24 99.58 91.00 1.341 1.226 0.914 12 31 68.85 98.27 90.20 1.427 1.310 0.918 68.85 98.27 89.39 1.427 1.298 0.910 2001 1 31 66.74 91.33 82.52 1.368 1.236 0.904 66.74 91.33 81.66 1.368 1.224 0.894 2 28 74.84 93.03 87.73 1.243 1.172 0.943 74.84 93.03 87.16 1.243 1.165 0.937 3 31 121.70 136.09 131.57 1.118 1.081 0.967 121.70 136.09 130.74 1.118 1.074 0.961 4 30 149.86 153.04 153.16 1.021 1.022 1.001 149.86 153.04 152.24 1.021 1.016 0.995 5 31 157.15 149.05 151.73 0.948 0.966 1.018 157.15 149.05 151.14 0.948 0.962 1.014 6 30 131.98 121.58 124.58 0.921 0.944 1.025 131.98 121.58 123.94 0.921 0.939 1.019 7 31 177.57 165.62 170.28 0.933 0.959 1.028 177.57 165.62 169.63 0.933 0.955 1.024 8 31 162.02 159.61 158.98 0.985 0.981 0.996 162.02 159.61 157.84 0.985 0.974 0.989 9 30 131.28 139.40 138.81 1.062 1.057 0.996 131.28 139.40 137.80 1.062 1.050 0.989 10 31 104.43 126.50 121.21 1.211 1.161 0.958 104.43 126.50 120.47 1.211 1.154 0.952 11 30 83.11 111.47 104.88 1.341 1.262 0.941 83.11 111.47 104.01 1.341 1.251 0.933 12 31 70.35 100.40 91.98 1.427 1.307 0.916 70.35 100.40 91.06 1.427 1.294 0.907 2002 1 31 71.23 97.47 90.65 1.368 1.273 0.930 71.23 97.47 89.97 1.368 1.263 0.923 2 28 90.93 113.02 111.62 1.243 1.228 0.988 90.93 113.02 110.98 1.243 1.220 0.982 3 31 127.14 142.18 141.17 1.118 1.110 0.993 127.14 142.18 140.31 1.118 1.104 0.987 4 30 125.83 128.50 128.34 1.021 1.020 0.999 125.83 128.50 127.65 1.021 1.014 0.993 5 31 146.23 138.69 139.17 0.948 0.952 1.003 146.23 138.69 138.27 0.948 0.946 0.997 6 30 165.14 152.14 154.60 0.921 0.936 1.016 165.14 152.14 153.53 0.921 0.930 1.009 7 31 147.84 137.89 141.48 0.933 0.957 1.026 147.84 137.89 140.98 0.933 0.954 1.022 8 31 172.69 170.11 170.53 0.985 0.987 1.002 172.69 170.11 169.42 0.985 0.981 0.996 9 30 139.53 148.16 147.04 1.062 1.054 0.992 139.53 148.16 146.01 1.062 1.046 0.985 10 31 107.86 130.66 123.35 1.211 1.144 0.944 107.86 130.66 122.49 1.211 1.136 0.937 11 30 80.12 107.46 99.00 1.341 1.236 0.921 80.12 107.46 98.46 1.341 1.229 0.916 12 31 56.43 80.54 69.85 1.427 1.238 0.867 56.43 80.54 69.19 1.427 1.226 0.859 2003 1 31 75.69 103.57 95.54 1.368 1.262 0.922 75.69 103.57 94.51 1.368 1.249 0.913 2 28 79.22 98.47 93.84 1.243 1.185 0.953 79.22 98.47 93.26 1.243 1.177 0.947 3 31 115.83 129.53 125.57 1.118 1.084 0.969 115.83 129.53 124.70 1.118 1.077 0.963 4 30 119.03 121.55 120.24 1.021 1.010 0.989 119.03 121.55 119.48 1.021 1.004 0.983 5 31 155.64 147.61 150.53 0.948 0.967 1.020 155.64 147.61 149.63 0.948 0.961 1.014 6 30 122.45 112.81 114.81 0.921 0.938 1.018 122.45 112.81 113.98 0.921 0.931 1.010 7 31 122.28 114.05 117.52 0.933 0.961 1.030 122.28 114.05 117.12 0.933 0.958 1.027 8 31 142.69 140.56 139.83 0.985 0.980 0.995 142.69 140.56 138.77 0.985 0.973 0.987 9 30 140.76 149.47 150.13 1.062 1.067 1.004 140.76 149.47 149.09 1.062 1.059 0.997 10 31 120.17 145.57 141.10 1.211 1.174 0.969 120.17 145.57 140.05 1.211 1.165 0.962 11 30 65.20 87.45 80.77 1.341 1.239 0.924 65.20 87.45 80.19 1.341 1.230 0.917 12 31 73.93 105.51 98.63 1.427 1.334 0.935 73.93 105.51 97.54 1.427 1.319 0.924 2004 1 31 83.64 114.46 107.53 1.368 1.286 0.939 83.64 114.46 106.38 1.368 1.272 0.929 2 29 102.52 127.43 126.29 1.243 1.232 0.991 102.52 127.43 125.63 1.243 1.225 0.986 3 31 126.69 141.68 138.92 1.118 1.097 0.981 126.69 141.68 137.83 1.118 1.088 0.973 4 30 169.56 173.16 173.31 1.021 1.022 1.001 169.56 173.16 172.07 1.021 1.015 0.994 5 31 139.51 132.32 134.00 0.948 0.961 1.013 139.51 132.32 133.06 0.948 0.954 1.006 6 30 160.26 147.64 151.41 0.921 0.945 1.026 160.26 147.64 150.67 0.921 0.940 1.021 7 31 187.41 174.79 177.34 0.933 0.946 1.015 187.41 174.79 176.11 0.933 0.940 1.008 8 31 142.95 140.81 141.00 0.985 0.986 1.001 142.95 140.81 140.02 0.985 0.980 0.994 9 30 95.04 100.92 97.30 1.062 1.024 0.964 95.04 100.92 96.73 1.062 1.018 0.958 10 31 103.26 125.08 120.15 1.211 1.164 0.961 103.26 125.08 119.31 1.211 1.155 0.954 11 30 88.81 119.12 113.59 1.341 1.279 0.954 88.81 119.12 112.74 1.341 1.269 0.946 12 31 68.93 98.37 90.75 1.427 1.317 0.923 68.93 98.37 89.97 1.427 1.305 0.915 2005 1 31 74.78 102.33 92.53 1.368 1.237 0.904 74.78 102.33 91.67 1.368 1.226 0.896 2 28 80.14 99.62 94.92 1.243 1.184 0.953 80.14 99.62 94.21 1.243 1.176 0.946 3 31 119.04 133.12 130.87 1.118 1.099 0.983 119.04 133.12 130.02 1.118 1.092 0.977 4 30 157.02 160.36 159.40 1.021 1.015 0.994 157.02 160.36 158.49 1.021 1.009 0.988 5 31 185.00 175.46 178.32 0.948 0.964 1.016 185.00 175.46 177.35 0.948 0.959 1.011 6 30 162.88 150.06 152.66 0.921 0.937 1.017 162.88 150.06 151.72 0.921 0.931 1.011 7 31 137.92 128.64 132.52 0.933 0.961 1.030 137.92 128.64 131.91 0.933 0.956 1.025 8 31 165.54 163.07 164.10 0.985 0.991 1.006 165.54 163.07 163.18 0.985 0.986 1.001 9 30 130.17 138.22 136.80 1.062 1.051 0.990 130.17 138.22 135.80 1.062 1.043 0.982 10 31 104.77 126.90 120.17 1.211 1.147 0.947 104.77 126.90 119.24 1.211 1.138 0.940 11 30 83.82 112.43 105.27 1.341 1.256 0.936 83.82 112.43 104.40 1.341 1.246 0.929 12 31 71.33 101.80 92.01 1.427 1.290 0.904 71.33 101.80 91.09 1.427 1.277 0.895 2006 1 31 75.31 103.05 96.91 1.368 1.287 0.940 75.31 103.05 96.08 1.368 1.276 0.932 2 28 77.85 96.76 92.60 1.243 1.189 0.957 77.85 96.76 92.22 1.243 1.185 0.953 3 31 116.45 130.23 127.20 1.118 1.092 0.977 116.45 130.23 126.22 1.118 1.084 0.969 4 30 122.76 125.37 123.75 1.021 1.008 0.987 122.76 125.37 123.11 1.021 1.003 0.982 5 31 134.17 127.25 128.77 0.948 0.960 1.012 134.17 127.25 127.99 0.948 0.954 1.006 6 30 146.33 134.81 138.36 0.921 0.946 1.026 146.33 134.81 137.65 0.921 0.941 1.021 7 31 126.05 117.57 121.13 0.933 0.961 1.030 126.05 117.57 120.60 0.933 0.957 1.026 8 31 161.85 159.43 159.75 0.985 0.987 1.002 161.85 159.43 158.63 0.985 0.980 0.995 9 30 125.74 133.52 133.06 1.062 1.058 0.997 125.74 133.52 132.10 1.062 1.051 0.989 10 31 119.54 144.80 140.18 1.211 1.173 0.968 119.54 144.80 139.15 1.211 1.164 0.961 11 30 76.99 103.27 95.63 1.341 1.242 0.926 76.99 103.27 94.87 1.341 1.232 0.919 12 31 64.64 92.25 85.46 1.427 1.322 0.926 64.64 92.25 84.75 1.427 1.311 0.919 2007 1 31 71.18 97.40 88.01 1.368 1.236 0.904 71.18 97.40 86.95 1.368 1.222 0.893 2 28 87.83 109.17 105.13 1.243 1.197 0.963 87.83 109.17 104.37 1.243 1.188 0.956 3 31 127.49 142.57 141.98 1.118 1.114 0.996 127.49 142.57 141.19 1.118 1.107 0.990 4 30 148.23 151.37 150.46 1.021 1.015 0.994 148.23 151.37 149.62 1.021 1.009 0.988 5 31 173.71 164.75 166.42 0.948 0.958 1.010 173.71 164.75 165.33 0.948 0.952 1.004 6 30 141.55 130.41 131.88 0.921 0.932 1.011 141.55 130.41 130.86 0.921 0.924 1.003 7 31 121.36 113.19 116.25 0.933 0.958 1.027 121.36 113.19 115.64 0.933 0.953 1.022 8 31 170.97 168.42 169.72 0.985 0.993 1.008 170.97 168.42 168.76 0.985 0.987 1.002 9 30 135.14 143.50 143.04 1.062 1.058 0.997 135.14 143.50 142.16 1.062 1.052 0.991 10 31 113.80 137.84 131.65 1.211 1.157 0.955 113.80 137.84 130.83 1.211 1.150 0.949 11 30 81.65 109.52 102.41 1.341 1.254 0.935 81.65 109.52 101.38 1.341 1.242 0.926 12 31 63.18 90.18 79.48 1.427 1.258 0.881 63.18 90.18 78.80 1.427 1.247 0.874 2008 1 31 68.65 93.95 87.73 1.369 1.278 0.934 68.65 93.95 86.79 1.369 1.264 0.924 2 29 99.36 123.50 118.88 1.243 1.196 0.963 99.36 123.50 117.75 1.243 1.185 0.953 3 31 127.16 142.20 139.61 1.118 1.098 0.982 127.16 142.20 138.51 1.118 1.089 0.974 4 30 146.29 149.40 149.44 1.021 1.022 1.000 146.29 149.40 148.76 1.021 1.017 0.996 5 31 164.71 156.22 158.08 0.948 0.960 1.012 164.71 156.22 157.08 0.948 0.954 1.006 6 30 125.86 115.95 119.26 0.921 0.948 1.029 125.86 115.95 118.69 0.921 0.943 1.024 7 31 185.02 172.56 176.27 0.933 0.953 1.021 185.02 172.56 175.30 0.933 0.947 1.016 8 31 147.57 145.36 143.88 0.985 0.975 0.990 147.57 145.36 142.82 0.985 0.968 0.983 9 30 122.47 130.04 127.86 1.062 1.044 0.983 122.47 130.04 127.05 1.062 1.037 0.977 10 31 109.71 132.89 126.81 1.211 1.156 0.954 109.71 132.89 126.04 1.211 1.149 0.948 11 30 75.16 100.80 93.10 1.341 1.239 0.924 75.16 100.80 92.32 1.341 1.228 0.916 12 31 73.05 104.26 96.81 1.427 1.325 0.929 73.05 104.26 96.01 1.427 1.314 0.921 2009 1 31 67.80 92.78 83.17 1.368 1.227 0.896 67.80 92.78 82.22 1.368 1.213 0.886 2 28 76.28 94.81 90.02 1.243 1.180 0.949 76.28 94.81 89.38 1.243 1.172 0.943 3 31 125.10 139.89 136.82 1.118 1.094 0.978 125.10 139.89 135.83 1.118 1.086 0.971 4 30 163.04 166.50 167.49 1.021 1.027 1.006 163.04 166.50 166.52 1.021 1.021 1.000 5 31 171.01 162.19 164.38 0.948 0.961 1.014 171.01 162.19 163.41 0.948 0.956 1.008 6 30 156.91 144.56 147.31 0.921 0.939 1.019 156.91 144.56 146.42 0.921 0.933 1.013 7 31 112.56 104.99 107.32 0.933 0.953 1.022 112.56 104.99 106.79 0.933 0.949 1.017 8 31 152.63 150.36 151.80 0.985 0.995 1.010 152.63 150.36 151.04 0.985 0.990 1.005 9 30 137.39 145.88 144.96 1.062 1.055 0.994 137.39 145.88 143.93 1.062 1.048 0.987 10 31 111.45 135.00 129.30 1.211 1.160 0.958 111.45 135.00 128.22 1.211 1.150 0.950 11 30 74.50 99.92 92.37 1.341 1.240 0.924 74.50 99.92 91.65 1.341 1.230 0.917 12 31 67.38 96.17 88.39 1.427 1.312 0.919 67.38 96.17 87.55 1.427 1.299 0.910 2010 1 31 79.36 108.59 103.92 1.368 1.309 0.957 79.36 108.59 102.80 1.368 1.295 0.947 2 28 84.19 104.65 102.19 1.243 1.214 0.976 84.19 104.65 101.62 1.243 1.207 0.971 3 31 102.65 114.79 110.47 1.118 1.076 0.962 102.65 114.79 109.65 1.118 1.068 0.955 4 30 127.53 130.24 128.12 1.021 1.005 0.984 127.53 130.24 127.13 1.021 0.997 0.976 5 31 161.91 153.56 154.70 0.948 0.955 1.007 161.91 153.56 153.69 0.948 0.949 1.001 6 30 141.26 130.14 132.15 0.921 0.936 1.015 141.26 130.14 131.31 0.921 0.930 1.009 7 31 150.52 140.39 143.97 0.933 0.956 1.026 150.52 140.39 143.28 0.933 0.952 1.021 8 31 182.88 180.15 182.72 0.985 0.999 1.014 182.88 180.15 181.87 0.985 0.994 1.010 9 30 140.24 148.91 147.49 1.062 1.052 0.990 140.24 148.91 146.38 1.062 1.044 0.983 10 31 95.43 115.60 105.09 1.211 1.101 0.909 95.43 115.60 104.14 1.211 1.091 0.901 11 30 88.92 119.27 114.72 1.341 1.290 0.962 88.92 119.27 113.81 1.341 1.280 0.954 12 31 74.16 105.85 100.35 1.427 1.353 0.948 74.16 105.85 99.36 1.427 1.340 0.939 2011 1 31 81.82 111.96 104.36 1.368 1.275 0.932 81.82 111.96 102.84 1.368 1.257 0.919 2 28 85.58 106.37 102.60 1.243 1.199 0.965 85.58 106.37 101.97 1.243 1.192 0.959 3 31 130.07 145.45 143.06 1.118 1.100 0.984 130.07 145.45 142.17 1.118 1.093 0.977 4 30 150.14 153.33 154.87 1.021 1.032 1.010 150.14 153.33 154.32 1.021 1.028 1.006 5 31 141.68 134.37 137.21 0.948 0.968 1.021 141.68 134.37 136.57 0.948 0.964 1.016 6 30 123.46 113.74 118.37 0.921 0.959 1.041 123.46 113.74 118.06 0.921 0.956 1.038 7 31 158.98 148.27 151.98 0.933 0.956 1.025 158.98 148.27 151.34 0.933 0.952 1.021 8 31 149.03 146.81 147.19 0.985 0.988 1.003 149.03 146.81 146.41 0.985 0.982 0.997 9 30 128.84 136.81 135.84 1.062 1.054 0.993 128.84 136.81 134.86 1.062 1.047 0.986 10 31 109.41 132.53 127.03 1.211 1.161 0.958 109.41 132.53 126.04 1.211 1.152 0.951 11 30 75.70 101.54 93.32 1.341 1.233 0.919 75.70 101.54 92.59 1.341 1.223 0.912 12 31 67.66 96.56 85.62 1.427 1.265 0.887 67.66 96.56 84.67 1.427 1.251 0.877 2012 1 31 72.39 99.05 89.20 1.368 1.232 0.901 72.39 99.05 88.09 1.368 1.217 0.889 2 29 77.62 96.48 91.12 1.243 1.174 0.944 77.62 96.48 90.35 1.243 1.164 0.936 3 31 102.68 114.82 109.67 1.118 1.068 0.955 102.68 114.82 109.01 1.118 1.062 0.949 4 30 5 31 6 30 7 31 8 31 9 30 10 31 11 30 12 31 1990- 1 73.03 99.93 91.90 1.368 1.258 0.920 73.03 99.93 90.93 1.368 1.245 0.910 2011 2 84.78 105.38 101.10 1.243 1.193 0.959 84.78 105.38 100.47 1.243 1.185 0.953 平均 3 117.72 131.64 128.21 1.118 1.089 0.974 117.72 131.64 127.26 1.118 1.081 0.967 (22年間) 4 140.13 143.10 142.39 1.021 1.016 0.995 140.13 143.10 141.58 1.021 1.010 0.989 5 157.36 149.25 150.83 0.948 0.959 1.011 157.36 149.25 149.92 0.948 0.953 1.005 6 138.95 128.01 130.31 0.921 0.938 1.018 138.95 128.01 129.50 0.921 0.932 1.012 7 150.40 140.28 143.12 0.933 0.952 1.020 150.40 140.28 142.35 0.933 0.946 1.015 8 156.53 154.19 154.30 0.985 0.986 1.001 156.53 154.19 153.29 0.985 0.979 0.994 9 123.86 131.52 129.63 1.062 1.047 0.986 123.86 131.52 128.72 1.062 1.039 0.979 10 108.05 130.88 124.44 1.211 1.152 0.951 108.05 130.88 123.55 1.211 1.143 0.944 11 78.61 105.44 97.75 1.341 1.243 0.927 78.61 105.44 96.97 1.341 1.234 0.920 12 68.89 98.32 89.49 1.427 1.299 0.910 68.89 98.32 88.63 1.427 1.287 0.901
値に乱れが出ることがあるため、後日計算式を修正した。
2012/1以前は修正前の値であるが、月合計値の誤差は高々0.5%程度である。
ホーム
月 （１）
屋根傾斜 28.8°
方位 25°（２）
屋根傾斜 30.0°
方位 30°比
（１）/（２）1 91.90 90.93 1.011 2 101.10 100.47 1.006 3 128.21 127.26 1.007 4 142.39 141.58 1.006 5 150.83 149.92 1.006 6 130.31 129.50 1.006 7 143.12 142.35 1.005 8 154.30 153.29 1.007 9 129.63 128.72 1.007 10 124.44 123.55 1.007 11 97.75 96.97 1.008 12 89.49 88.63 1.010