condition mean min max 4 h after light 90.78115 83.0924 98.4699 8 h after light 56.54005 53.9299 59.1502 12 h after light 34.23395 33.9358 34.5321 4 h after dark 16.3722 16.1481 16.5963 8 h after dark 20.93995 19.3299 22.55 12 h after dark 33.2575 32.3543 34.1607