condition	mean	min	max
4 h after light	15.583992499999999	14.42598	16.742005
8 h after light	16.885333000000003	15.273495	18.497171
12 h after light	19.104322000000003	18.93849	19.270154
4 h after dark	21.4585005	19.546644	23.370357
8 h after dark	17.50599	16.383765	18.628215
12 h after dark	17.24701	17.24701	17.24701