I don't seem to understand what is this blank series and/or the blue box in legends which has no text next to it. Could someone please help?
Here's the image showing my problem. https://i.sstatic.net/mDpcP.png
I don't seem to understand what is this blank series and/or the blue box in legends which has no text next to it. Could someone please help?
Here's the image showing my problem. https://i.sstatic.net/mDpcP.png
This is most likely caused by your legend data series coming from a merged cell. The name is being used as a legend label from column A, but as you've merged A and B, B is being used as a blank series and applied to the legend.
Simply remove the merge cells on columns A and B, and change the series to look at column A for the labels and legend.