condition mean min max 0 h after light 7.174435 6.76325 7.58562 4 h after light 4.6696349999999995 4.32834 5.01093 8 h after light 11.437349999999999 11.3509 11.5238 4 h after dark 11.86695 10.8453 12.8886 8 h after dark 9.974060000000001 9.04062 10.9075 12 h after dark 6.97832 6.00244 7.9542