condition	mean	min	max
0 h after light	18.651049999999998	18.5607	18.7414
4 h after light	22.99725	20.4784	25.5161
8 h after light	14.0991	12.8957	15.3025
4 h after dark	16.52085	14.2341	18.8076
8 h after dark	19.8907	18.8603	20.9211
12 h after dark	20.5213	19.8589	21.1837