condition mean min max 4 h after light 1.261655 1.19261 1.3307 8 h after light 1.70229 1.63459 1.76999 12 h after light 2.9591149999999997 2.73257 3.18566 4 h after dark 3.20392 2.86234 3.5455 8 h after dark 1.967495 1.85117 2.08382 12 h after dark 1.93846 1.78887 2.08805