condition	mean	min	max
4 h after light	23.945296	20.8166	27.073992
8 h after light	20.189946	19.894786	20.485106
12 h after light	18.9802705	15.204288	22.756253
4 h after dark	18.017100999999997	16.015136	20.019066
8 h after dark	17.490541	15.40494	19.576142
12 h after dark	36.736731	36.736731	36.736731