condition mean min max 4 h after light 14.539473000000001 13.37554 15.703406 8 h after light 11.343862 10.858922 11.828802 12 h after light 13.191414 12.801337 13.581491 4 h after dark 12.5120275 12.000049 13.024006 8 h after dark 11.9762205 11.127464 12.824977 12 h after dark 15.206899 15.206899 15.206899