condition	mean	min	max
4 h after light	44.06105	43.5077	44.6144
8 h after light	21.1708	19.5233	22.8183
12 h after light	12.6755	12.2905	13.0605
4 h after dark	7.0488	5.8884	8.2092
8 h after dark	10.20525	10.0774	10.3331
12 h after dark	23.53615	22.5263	24.546