condition mean min max 4 h after light 887.9787225 876.571542 899.385903 8 h after light 909.3905010000001 822.296467 996.484535 12 h after light 1196.0193735 1102.470523 1289.568224 4 h after dark 1124.9218059999998 1008.924364 1240.919248 8 h after dark 902.4391285 559.629377 1245.24888 12 h after dark 1152.370721 1152.370721 1152.370721