condition	mean	min	max
4 h after light	7.881055	6.88217	8.87994
8 h after light	17.3436	16.3726	18.3146
12 h after light	32.49485	29.8715	35.1182
4 h after dark	43.64723333333333	42.3923	44.697
8 h after dark	20.6536	18.2094	23.0835
12 h after dark	15.767666666666667	14.6881	17.5932