condition mean min max 0 h after light 7.564780000000001 7.10597 8.02359 4 h after light 9.892859999999999 9.12332 10.6624 8 h after light 11.576625 9.23285 13.9204 4 h after dark 14.187650000000001 13.3002 15.0751 8 h after dark 9.719380000000001 9.39106 10.0477 12 h after dark 6.929605 5.22575 8.63346