condition	mean	min	max
4 h after light	6.54129	6.29891	6.75006
8 h after light	6.29863	5.88892	6.56942
12 h after light	6.28068	5.91629	6.4660400000000005
4 h after dark	6.437056666666667	6.00419	7.04825
8 h after dark	6.499953333333334	6.20672	7.0709100000000005
12 h after dark	6.805706666666667	6.589339999999999	6.95357