condition	mean	min	max
4 h after light	13132.70722	12576.10333	14157.35333
8 h after light	12972.151666666667	11360.38667	13943.72333
12 h after light	17355.811110000002	15322.96333	19043.83
1.5 h after dark	19645.72666666667	18598.24	21195.03667
5.5 h after dark	21282.18778	20035.97667	21983.23667
9.5 h after dark	17300.615556666668	15715.53667	19314.01333