condition	mean	min	max
4 h after light	7.30548	7.1986300000000005	7.373760000000001
8 h after light	7.264183333333333	7.011360000000001	7.44157
12 h after light	7.30245	7.22572	7.3882
4 h after dark	7.106823333333334	6.998880000000001	7.31195
8 h after dark	6.8964	6.619689999999999	7.3034
12 h after dark	6.7059299999999995	6.6086800000000006	6.78147