condition	mean	min	max
4 h after light	18.233895	14.949077	21.518713
8 h after light	21.909283	19.321208	24.497358
12 h after light	20.043178	17.982295	22.104061
4 h after dark	17.316777000000002	16.077141	18.556413
8 h after dark	19.59309	15.834779	23.351401
12 h after dark	16.856956	16.856956	16.856956