condition	mean	min	max
4 h after light	21.669251	20.26684	23.071662
8 h after light	19.2085065	17.722576	20.694437
12 h after light	20.099978	18.583274	21.616682
4 h after dark	18.859204	18.524352	19.194056
8 h after dark	20.113746499999998	18.008014	22.219479
12 h after dark	22.214605	22.214605	22.214605