condition	mean	min	max
4 h after light	7.800056666666667	7.7806	7.831510000000001
8 h after light	7.84135	7.7534600000000005	7.97652
12 h after light	7.748073333333333	7.5373	7.91592
4 h after dark	7.77393	7.6173	7.89532
8 h after dark	7.715626666666666	7.617999999999999	7.80345
12 h after dark	8.03639	7.95804	8.19148