I have gone through the article , and it talks of downloading an add-in which will do the job of adding the data labels ; this means that when you use the file , you will also have to download the add-in ; so will anyone else who wishes to use this feature. Is this acceptable ?
Hope the attached file will be helpful, this give you the pointer value as well... I am trying to get meter reading as required by you (like 0, 10, 20.....100 etc.)