condition	mean	min	max
4 h after light	20.1759	13.9901	26.3617
8 h after light	34.8953	27.7142	42.0764
12 h after light	21.4394	18.6565	24.2223
4 h after dark	19.71842666666667	3.90678	34.191
8 h after dark	21.1736	18.9281	24.3386
12 h after dark	12.469733333333334	0.0	19.4737