condition	mean	min	max
4 h after light	6.647584999999999	6.49292	6.80225
8 h after light	6.740995	6.48301	6.99898
12 h after light	7.667415	7.29872	8.03611
4 h after dark	11.328050000000001	10.7109	11.9452
8 h after dark	10.0052	10.0	10.0104
12 h after dark	9.55338	9.07166	10.0351