condition	mean	min	max
4 h after light	19.4204325	19.246281	19.594584
8 h after light	15.639846499999999	14.86178	16.417913
12 h after light	15.2080525	14.896201	15.519904
4 h after dark	14.983658499999999	13.549404	16.417913
8 h after dark	16.184516	15.951119	16.417913
12 h after dark	19.88897	19.88897	19.88897