condition	mean	min	max
0 h after light	16.2948	15.2692	17.3204
4 h after light	20.4306	18.7059	22.1553
8 h after light	9.934529999999999	8.91066	10.9584
4 h after dark	6.05946	4.9724	7.14652
8 h after dark	17.40005	15.8512	18.9489
12 h after dark	18.94545	18.6277	19.2632