condition	mean	min	max
4 h after light	21.627473000000002	19.252653	24.002293
8 h after light	19.7273025	19.671765	19.78284
12 h after light	19.917965000000002	19.671765	20.164165
4 h after dark	19.711532	17.585155	21.837909
8 h after dark	20.559962	18.856929	22.262995
12 h after dark	20.613976	20.613976	20.613976