condition	mean	min	max
4 h after light	8.061123333333335	7.85185	8.24042
8 h after light	7.13535	6.9718800000000005	7.3261
12 h after light	7.170113333333333	6.781789999999999	7.43505
4 h after dark	8.194033333333334	8.011460000000001	8.3507
8 h after dark	8.476420000000001	8.23753	8.736260000000001
12 h after dark	8.53718	8.35008	8.68346