condition	mean	min	max
4 h after light	17.8824	16.3812	19.3836
8 h after light	20.06415	19.6153	20.513
12 h after light	21.9329	18.9785	24.8873
4 h after dark	26.986966666666667	26.8008	27.3313
8 h after dark	34.817433333333334	32.3796	36.429
12 h after dark	32.70513333333333	30.2735	36.4494