condition	mean	min	max
4 h after light	7.40892	7.140210000000001	7.60226
8 h after light	7.4225933333333325	7.203639999999999	7.5697399999999995
12 h after light	7.415073333333333	6.90809	7.76889
4 h after dark	7.512549999999999	7.15954	7.833589999999999
8 h after dark	7.536876666666667	7.2985	7.79853
12 h after dark	7.631013333333334	7.48707	7.75938