condition	mean	min	max
4 h after light	4.15421	4.10484	4.18051
8 h after light	4.25962	4.19517	4.37561
12 h after light	4.17249	4.09475	4.272959999999999
4 h after dark	4.197076666666667	4.1658599999999995	4.21667
8 h after dark	4.22593	4.09324	4.34357
12 h after dark	4.17224	4.1081900000000005	4.22269