condition mean min max 4 h after light 237.7261495 89.233718 386.218581 8 h after light 312.169117 304.539749 319.798485 12 h after light 276.373612 219.397232 333.349992 4 h after dark 138.5402345 79.079002 198.001467 8 h after dark 66.3341805 38.212704 94.455657 12 h after dark 69.544872 69.544872 69.544872