condition	mean	min	max
4 h after light	17.908	16.0994	19.7166
8 h after light	12.7336	12.4398	13.0274
12 h after light	16.198050000000002	15.4333	16.9628
4 h after dark	18.730433333333334	18.1392	19.1544
8 h after dark	22.481933333333334	19.8315	25.0017
12 h after dark	17.048966666666665	16.1682	18.6658