condition	mean	min	max
4 h after light	8.82863	8.75041	8.92207
8 h after light	8.88984	8.70008	9.015419999999999
12 h after light	8.949883333333334	8.79931	9.07757
4 h after dark	8.773200000000001	8.64414	8.9076
8 h after dark	8.442070000000001	8.14807	8.62974
12 h after dark	8.21105	8.00291	8.47354