condition	mean	min	max
4 h after light	6.734703333333334	6.559660000000001	6.90995
8 h after light	6.92413	6.806310000000001	7.07171
12 h after light	6.711456666666667	6.563910000000001	6.79017
4 h after dark	7.691153333333333	7.458880000000001	7.9061699999999995
8 h after dark	7.80336	7.448410000000001	7.988739999999999
12 h after dark	7.6972933333333335	7.37258	7.9509