condition	mean	min	max
4 h after light	17.134349999999998	16.5202	17.7485
8 h after light	17.516849999999998	17.5037	17.53
12 h after light	16.31015	15.7674	16.8529
4 h after dark	16.76425	15.6841	17.8444
8 h after dark	15.27935	15.2221	15.3366
12 h after dark	19.19495	18.8654	19.5245