condition	mean	min	max
4 h after light	8.82776	8.65497	9.010639999999999
8 h after light	8.850303333333333	8.734169999999999	9.0212
12 h after light	8.73133	8.57132	8.914530000000001
4 h after dark	8.798243333333334	8.50784	9.032210000000001
8 h after dark	8.753273333333334	8.46175	8.99816
12 h after dark	8.66251	8.54792	8.75421