condition	mean	min	max
4 h after light	17.622	17.4961	17.7479
8 h after light	15.82125	15.0689	16.5736
12 h after light	17.553649999999998	16.5383	18.569
4 h after dark	20.27715	20.0713	20.483
8 h after dark	19.127850000000002	18.4175	19.8382
12 h after dark	18.4668	17.6538	19.2798