condition	mean	min	max
0 h after light	17.2468	17.0646	17.429
4 h after light	17.68	16.7391	18.6209
8 h after light	15.1197	14.5647	15.6747
4 h after dark	19.677	19.5549	19.7991
8 h after dark	18.99465	18.9907	18.9986
12 h after dark	17.85955	17.4122	18.3069