condition mean min max 0 h after light 6.387169999999999 6.15173 6.62261 4 h after light 7.041855 6.88001 7.2037 8 h after light 7.743345 7.44878 8.03791 4 h after dark 8.358554999999999 7.93548 8.78163 8 h after dark 7.720315 7.32469 8.11594 12 h after dark 6.0785599999999995 5.83026 6.32686