condition mean min max 4 h after light 128.313224 112.357497 144.268951 8 h after light 115.096303 114.059828 116.132778 12 h after light 121.760533 109.375878 134.145188 4 h after dark 117.5217535 101.349099 133.694408 8 h after dark 112.7734925 111.13276 114.414225 12 h after dark 137.078211 137.078211 137.078211