condition	mean	min	max
4 h after light	7.9160466666666665	7.757639999999999	8.198080000000001
8 h after light	8.29612	8.18143	8.520610000000001
12 h after light	8.46287	8.38707	8.52317
4 h after dark	8.991743333333334	8.83273	9.195780000000001
8 h after dark	8.54362	8.15846	8.7789
12 h after dark	8.270843333333334	8.22065	8.36528