condition	mean	min	max
4 h after light	11.694749999999999	10.3213	13.0682
8 h after light	13.648	13.6356	13.6604
12 h after light	16.15495	15.5069	16.803
4 h after dark	19.001666666666665	18.3218	20.0668
8 h after dark	19.4171	18.4805	20.5314
12 h after dark	15.711033333333333	14.3435	17.1294