condition mean min max 4 h after light 2778.870058 2504.161655 3053.578461 8 h after light 2356.4687065 2060.289532 2652.647881 12 h after light 2734.546828 2586.476984 2882.616672 4 h after dark 2622.6396225 2490.232057 2755.047188 8 h after dark 1947.6188475 1538.330802 2356.906893 12 h after dark 2244.385903 2244.385903 2244.385903