condition	mean	min	max
4 h after light	6.252000000000001	3.43861	9.06539
8 h after light	3.9646950000000003	3.66516	4.26423
12 h after light	6.88198	6.20207	7.56189
4 h after dark	19.318733333333334	17.6009	21.9777
8 h after dark	16.480633333333333	15.5947	17.7774
12 h after dark	9.953993333333333	9.29468	10.3778