How to calculate g index in excel for bibliometric analysis

Egghe, L. (2006). Theory and practise of the g-index. Scientometrics, 69(1), 131-152. doi.org/10.1007/s11192-006-01...
Link to dataset:
docs.google.com/spreadsheets/...

[@azyulailazra6760]

I tried this formula for my articles. However, some of the years have no FALSE in the g-index column. Does it mean that there is no g-index? Or the last rank will automatically be the g-index?

[@economicstv3882]

If you can share a screenshot of your data, then I can tell. The value just above the first false value is your g-index