condition	mean	min	max
4 h after light	19.63516	17.074992	22.195328
8 h after light	21.5174435	20.168415	22.866472
12 h after light	20.107415500000002	19.390916	20.823915
4 h after dark	23.709682	21.56096	25.858404
8 h after dark	23.4146935	18.794499	28.034888
12 h after dark	29.624607	29.624607	29.624607