condition	mean	min	max
4 h after light	17.349502	14.314568	20.384436
8 h after light	16.131325	12.791553	19.471097
12 h after light	14.7960095	14.674041	14.917978
4 h after dark	14.8134385	14.708899	14.917978
8 h after dark	12.9554385	12.141342	13.769535
12 h after dark	18.095983	18.095983	18.095983