condition	mean	min	max
4 h after light	19.1871495	18.664756	19.709543
8 h after light	18.300167000000002	16.449591	20.150743
12 h after light	17.0061265	15.001753	19.0105
4 h after dark	16.8282945	14.686586	18.970003
8 h after dark	21.0363555	19.301173	22.771538
12 h after dark	18.664756	18.664756	18.664756