condition mean min max 4 h after light 1.483695 1.00488 1.96251 8 h after light 2.060575 1.84398 2.27717 12 h after light 1.994045 1.69271 2.29538 4 h after dark 2.43542 1.93024 2.89478 8 h after dark 2.40468 2.04468 2.71914 12 h after dark 1.171165 0.925495 1.31325