condition	mean	min	max
4 h after light	7.41185	7.17362	7.57222
8 h after light	8.101563333333333	7.78729	8.26598
12 h after light	7.70479	7.590339999999999	7.8565
4 h after dark	7.51663	7.36333	7.654380000000001
8 h after dark	7.420983333333333	7.34363	7.46535
12 h after dark	7.137316666666667	7.0972100000000005	7.20775