condition mean min max 0 h after light 3.90894 3.5732 4.24468 4 h after light 3.670565 3.61283 3.7283 8 h after light 3.60705 3.20769 4.00641 4 h after dark 5.3206 5.19246 5.44874 8 h after dark 4.240775 3.67247 4.80908 12 h after dark 4.24283 3.45976 5.0259