condition mean min max 4 h after light 878.5 878.5 878.5 8 h after light 1127.1999999999998 1081.3 1173.1 12 h after light 1374.55 1150.0 1599.1 4 h after dark 1795.15 1719.3 1871.0 8 h after dark 2145.3 2099.8 2190.8 12 h after dark 2051.55 1663.7 2439.4