condition mean min max 3 h after light 5.71574 3.58205 7.93705 6 h after light 7.79846 6.74147 8.63591 9 h after light 8.54381 6.23277 11.0278 12 h after light 5.853595 3.8482 7.14445 3 h after dark 2.1938033333333333 1.36361 3.00183 6 h after dark 1.85618 1.2195 2.65066 9 h after dark 2.8211833333333334 2.00355 4.03613 12 h after dark 4.17632 2.70086 5.65178