condition	mean	min	max
4 h after light	7.505716666666667	7.40672	7.58662
8 h after light	7.592253333333333	7.57302	7.61189
12 h after light	7.621393333333334	7.430210000000001	7.7952699999999995
4 h after dark	7.90733	7.80825	7.964169999999999
8 h after dark	7.701226666666667	7.62282	7.74275
12 h after dark	7.566190000000001	7.3700600000000005	7.76475