Any insight into why I'm getting this weird spacing with the box-and-whisker? I expect the flat box to cover ONLY over the month it resides in. However, instead, the box covers half of each neighboring month. When i randomly add one or two additional values, the spacing corrects itself to the desired effect, see below:

This weird effect is normally more pronounced when you enter a second random value to the beginning of the month. More than two values seem to fix the sizing issue.
Attached is Alteryx example.