condition	mean	min	max
4 h after light	8.82549	6.14608	11.5049
8 h after light	13.5269	11.5657	15.4881
12 h after light	13.391	12.1341	14.6479
4 h after dark	20.8239	19.2157	23.4775
8 h after dark	15.444566666666667	14.7803	16.046
12 h after dark	9.966033333333334	7.56054	13.8982