condition	mean	min	max
4 h after light	7.38009	7.15845	7.53892
8 h after light	7.222266666666666	7.10071	7.379639999999999
12 h after light	7.24989	7.22527	7.2903
4 h after dark	7.15881	6.95383	7.3806899999999995
8 h after dark	7.0583566666666675	6.974010000000001	7.221310000000001
12 h after dark	7.160743333333333	7.1397699999999995	7.178489999999999