condition mean min max 0 h after light 9.440185 8.85857 10.0218 4 h after light 6.83922 6.77127 6.90717 8 h after light 8.32891 7.51157 9.14625 4 h after dark 10.29755 10.1322 10.4629 8 h after dark 11.01565 10.472 11.5593 12 h after dark 8.995640000000002 8.75064 9.24064