condition	mean	min	max
4 h after light	9.54068	9.479330000000001	9.57519
8 h after light	7.6887566666666665	7.5393300000000005	7.77255
12 h after light	7.575173333333333	7.442539999999999	7.6456
4 h after dark	7.63769	7.4111	7.82666
8 h after dark	8.473323333333333	8.281089999999999	8.589089999999999
12 h after dark	9.618943333333332	9.536489999999999	9.727219999999999