condition mean min max 4 h after light 257.1168985 242.816725 271.417072 8 h after light 310.618372 302.006522 319.230222 12 h after light 374.81116899999995 374.662565 374.959773 4 h after dark 524.1900185 397.681235 650.698802 8 h after dark 506.29505 395.050351 617.539749 12 h after dark 418.559712 418.559712 418.559712