condition	mean	min	max
4 h after light	6.83952	4.75263	8.92641
8 h after light	4.675305	4.67325	4.67736
12 h after light	4.537065	4.46581	4.60832
4 h after dark	5.037466666666667	4.50337	5.88601
8 h after dark	7.01223	6.03502	8.16635
12 h after dark	6.5646233333333335	5.89668	7.76965