condition mean min max 4 h after light 1998.0686289999999 1677.751355 2318.385903 8 h after light 2255.5995395 1709.383685 2801.815394 12 h after light 2347.3050885000002 2251.842629 2442.767548 4 h after dark 2396.2709655 2008.487279 2784.054652 8 h after dark 1837.1345529999999 1461.153422 2213.115684 12 h after dark 1883.288331 1883.288331 1883.288331