condition	mean	min	max
4 h after light	18.174300000000002	18.1536	18.195
8 h after light	9.419635	9.23503	9.60424
12 h after light	9.43673	9.25207	9.62139
4 h after dark	14.7924	13.9214	15.7665
8 h after dark	22.168133333333333	21.1541	22.757
12 h after dark	22.078866666666666	21.1268	22.6401