condition	mean	min	max
4 h after light	9.22572	9.158710000000001	9.30137
8 h after light	9.1814	8.98059	9.32527
12 h after light	8.810463333333335	8.714310000000001	8.94637
4 h after dark	9.428053333333333	9.19747	9.58675
8 h after dark	9.407983333333334	9.24285	9.59554
12 h after dark	9.042953333333333	8.883230000000001	9.22109