condition	mean	min	max
4 h after light	8.569423333333333	8.39847	8.769219999999999
8 h after light	8.4792	8.26347	8.614410000000001
12 h after light	8.431320000000001	8.379010000000001	8.49934
4 h after dark	8.682816666666668	8.54786	8.76321
8 h after dark	8.64826	8.53247	8.82875
12 h after dark	8.53377	8.42557	8.6873