condition mean min max 4 h after light 3016.05 2875.77 3156.33 8 h after light 1610.685 1579.35 1642.02 12 h after light 830.6759999999999 790.582 870.77 4 h after dark 1277.26 1162.05 1392.47 8 h after dark 2224.385 2185.24 2263.53 12 h after dark 2592.85 2530.91 2654.79