condition	mean	min	max
3 h after light	8.768843333333333	7.60716	9.87587
6 h after light	9.8146	8.09466	11.6342
9 h after light	13.39	12.1944	15.7141
12 h after light	15.034175000000001	14.6664	15.4967
3 h after dark	22.626933333333334	20.7607	25.0536
6 h after dark	21.577866666666665	19.4625	25.0639
9 h after dark	17.26353333333333	15.4285	18.7477
12 h after dark	13.456949999999999	12.7693	14.1446