condition	mean	min	max
4 h after light	8.24012	8.1039	8.45346
8 h after light	8.525286666666668	8.371780000000001	8.639510000000001
12 h after light	8.535983333333334	8.46563	8.64516
4 h after dark	8.62618	8.39579	8.742180000000001
8 h after dark	8.621653333333333	8.445089999999999	8.81129
12 h after dark	8.572823333333334	8.54927	8.58557