condition	mean	min	max
4 h after light	19.190386500000002	17.006553	21.37422
8 h after light	13.5233285	13.432258	13.614399
12 h after light	14.605577	13.323032	15.888122
4 h after dark	13.5450815	12.028328	15.061835
8 h after dark	15.0332155	12.888331	17.1781
12 h after dark	15.061835	15.061835	15.061835