condition	mean	min	max
4 h after light	16.116500000000002	13.7283	18.5047
8 h after light	6.56082	5.64474	7.4769
12 h after light	8.46518	8.44417	8.48619
4 h after dark	7.577143333333333	6.19246	8.4995
8 h after dark	13.3802	12.4637	14.5405
12 h after dark	13.723233333333333	13.4155	14.1456