condition	mean	min	max
4 h after light	2.49834	2.11239	2.88429
8 h after light	7.993195	7.78949	8.1969
12 h after light	17.146549999999998	16.7165	17.5766
4 h after dark	14.63355	13.6013	15.6658
8 h after dark	9.99952	9.67334	10.3257
12 h after dark	4.732695	4.62983	4.83556