condition mean min max 4 h after light 341.923 301.655 382.191 8 h after light 370.8835 344.428 397.339 12 h after light 447.4635 434.723 460.204 4 h after dark 539.313 536.916 544.02 8 h after dark 476.0443333333333 456.54 508.601 12 h after dark 442.979 385.384 493.569