condition	mean	min	max
4 h after light	17872.222223333334	15942.03667	21400.13
8 h after light	24321.77666666667	23483.25	25923.65
12 h after light	22430.993336666666	21314.67667	24314.10667
1.5 h after dark	20526.61	17029.96	24467.46333
5.5 h after dark	16795.541113333333	15445.27667	18040.13667
9.5 h after dark	16093.9	12083.50333	18921.06667