condition mean min max 0 h after light 16.131 15.276 16.986 4 h after light 8.74999 8.55541 8.94457 8 h after light 11.38415 11.0283 11.74 4 h after dark 9.424040000000002 8.37418 10.4739 8 h after dark 8.712724999999999 8.03187 9.39358 12 h after dark 11.66095 10.9368 12.3851