condition	mean	min	max
4 h after light	8.21364	7.33522	9.09206
8 h after light	7.926245	7.25019	8.6023
12 h after light	7.3364650000000005	6.84809	7.82484
4 h after dark	7.63138	7.31563	8.13144
8 h after dark	8.21255	6.93946	10.1517
12 h after dark	6.68058	6.53437	6.89472