it’s very hard to explain how to program a excel macro on a forum. There are plenty of internet tutorials about simple macros, have a look…
Same goes for pivot table… just try it few times and you’ll understand what it does. They are quite useful for data analysis.
I hope I’m not offending you but I’m not here to talk about excel 🙂 I’m here to talk about gsm optimization. There’s nothing else that beats the nerdiness of it 🙂