condition	mean	min	max
4 h after light	22.226562	22.142799	22.310325
8 h after light	21.29041	20.219868	22.360952
12 h after light	18.9271655	18.217102	19.637229
4 h after dark	22.6312145	22.360952	22.901477
8 h after dark	26.2938445	24.717788	27.869901
12 h after dark	17.531883	17.531883	17.531883