condition mean min max 4 h after light 18.756 15.6643 21.8477 8 h after light 2.87514 2.78407 2.96621 12 h after light 1.200015 1.12931 1.27072 4 h after dark 0.48072833333333337 0.384612 0.53429 8 h after dark 4.15223 3.93368 4.35749 12 h after dark 9.281223333333333 8.93885 9.54842