condition mean min max 0 h after light 9.464995 8.83509 10.0949 2 h after light 7.67084 7.16189 8.17979 4 h after light 7.53481 7.09717 7.97245 8 h after light 7.85666 7.34556 8.36776 12 h after light 8.013735 6.34283 9.68464 2 h after dark 6.83107 6.27188 7.39026 4 h after dark 7.1914 6.87212 7.51068 8 h after dark 7.878105 7.57665 8.17956 12 h after dark 7.1937750000000005 7.18389 7.20366