How to calculate the sum for each option of all webform results in a Drupal webform grid? I created a webform in drupal, and added a grid component in it. The grid has 13 questions and 3 options (good, bad, terrible). It's like a poll and people come and answer the questions.

In results, I already have the sum for each option in each question. What I also need is the sum for each option for all questions togehter. For example I need a sum row in grid footer!

I tried webform submissions in views, but it does not give me the data stored in grid.

Be aware that I'm noob in PHP and I don't know how to make TPL files.

image in this link says it all: 

thanks
Create a 'webform submission' view. By using the Views Calc module you can display the sum of each field at bottom of the table/grid.

This module adds simple calculations to a views table. Requires the Views module.
You can SUM, AVERAGE, COUNT, MIN, MAX, or AVG selected columns. A plug in theme makes the view look more spreadsheet-like (right justifies numeric fields, shades calculated columns and rows, and underlines calculated rows).

Image from module page