condition	mean	min	max
4 h after light	18.873171	17.041535	20.704807
8 h after light	21.335912	19.812464	22.85936
12 h after light	18.0137125	15.998228	20.029197
4 h after dark	22.552373	21.07602	24.028726
8 h after dark	21.628525500000002	21.590874	21.666177
12 h after dark	19.970378	19.970378	19.970378