condition	mean	min	max
4 h after light	6.75338	4.92745	8.57931
8 h after light	0.579062	0.451949	0.706175
12 h after light	6.08084	3.86381	8.29787
4 h after dark	12.36757	9.13594	15.5992
8 h after dark	27.08445	25.8013	28.3676
12 h after dark	16.8249	16.4329	17.2169