condition	mean	min	max
4 h after light	7.753123333333334	7.66811	7.812710000000001
8 h after light	7.85541	7.75467	7.97078
12 h after light	7.74091	7.50236	7.95304
4 h after dark	7.972580000000001	7.8997	8.01458
8 h after dark	8.026443333333333	7.94251	8.09019
12 h after dark	7.72585	7.696839999999999	7.74708