condition mean min max 4 h after light 6.25962 4.87192 7.64732 8 h after light 8.393735 7.9093 8.87817 12 h after light 7.460615000000001 7.02249 7.89874 4 h after dark 9.086123333333333 7.27957 10.3531 8 h after dark 9.918063333333334 9.49619 10.2903 12 h after dark 8.976936666666667 6.23808 11.4562