condition	mean	min	max
4 h after light	9.006943333333334	8.8809	9.18816
8 h after light	8.932573333333334	8.72516	9.073780000000001
12 h after light	8.937823333333334	8.86115	9.019210000000001
4 h after dark	9.050600000000001	8.815710000000001	9.18255
8 h after dark	8.911563333333334	8.73753	9.00895
12 h after dark	9.005843333333333	8.92716	9.099269999999999