condition	mean	min	max
4 h after light	20.25145	19.1846	21.3183
8 h after light	20.106749999999998	19.6097	20.6038
12 h after light	20.30845	19.5956	21.0213
4 h after dark	19.44165	18.2929	20.5904
8 h after dark	19.041	18.4637	19.6183
12 h after dark	19.4839	19.2703	19.6975