condition	mean	min	max
4 h after light	17.443550000000002	14.8535	20.0336
8 h after light	12.7699	12.6727	12.8671
12 h after light	13.57555	11.9142	15.2369
4 h after dark	18.139033333333334	16.3807	20.1524
8 h after dark	19.5821	18.88	20.5364
12 h after dark	16.7566	16.2566	17.1924