the plot of differences would benefit from showing negative values - so that fronts > backs is positive (like sat, sun) and backs > fronts is negative (like tu

the plot of differences would benefit from showing negative values - so that fronts > backs is positive (like sat, sun) and backs > fronts is negative (like tuesday). The way it's currently shon (magnitude or abs value) requires a lot of cognitive load to parse that could be intuitive.