How to create a bar graph for row values

Hello, this is my first time on the forum, sorry for something.

I needed to create a chart for the error control, but I don't know how to do it, this control needs to analyze the days of the month and select the ones that have more errors, and then calculate this number of days with error to separate in the error category.

Ex: 3> days with ERROR and ERROR> 50 - Red Category

3> days with ERROR and ERROR <5 and> 50 - Yellow Category

ERROR <5 - Green Category

During all the time that my problem was, making a matrix to calculate the error for days, but when we put the information in the bar graph, the values change (because of the context of the line) and in no time can I make a table or as you can calculate the error on the days (row context) and error throughout the month (column context).

Please, can anyone help me?

Thank you all.