condition mean min max 0 h after light 16.63175 15.6948 17.5687 2 h after light 19.40465 18.6342 20.1751 4 h after light 20.567 19.4008 21.7332 8 h after light 14.78485 13.2177 16.352 12 h after light 19.0317 18.4833 19.5801 2 h after dark 20.99475 19.4469 22.5426 4 h after dark 19.370649999999998 17.8214 20.9199 8 h after dark 17.198999999999998 16.1689 18.2291 12 h after dark 15.623000000000001 15.419 15.827