condition	mean	min	max
4 h after light	18.0052905	17.342501	18.66808
8 h after light	20.922259	18.66808	23.176438
12 h after light	17.8255205	16.815409	18.835632
4 h after dark	18.715246999999998	18.66808	18.762414
8 h after dark	17.9156385	15.162923	20.668354
12 h after dark	17.354367	17.354367	17.354367