condition	mean	min	max
4 h after light	7.62554	7.51483	7.82848
8 h after light	7.849119999999999	7.60422	8.086039999999999
12 h after light	7.51743	7.31854	7.7774600000000005
4 h after dark	7.09506	6.996689999999999	7.23678
8 h after dark	6.729723333333333	6.40944	6.938039999999999
12 h after dark	6.607443333333333	6.36407	6.7643