I'm looking for a method to run a gap and overlap analysis across a set of data 1000-ish rows. Data are teams ranking their test coverage of each feature as 1, 2 or 3, Scores. I want to look for gaps across the rows where no group has scored it a 1 and also show where multiple groups rank as 1. A snapshot of the data table is below.
| Feature # | FVT | EVT | CVT | MSV | GQ | Cert | HW | PE | MFG Test | PDE | TCM / FAE? |
| 1 | 1 | | 2 | 3 | | 3 | 1 | 2 | 2 | | |
| 2 | 1 | | 2 | 3 | | 3 | 1 | 2 | 2 | | |
| 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| 4 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 3 |
| 5 | 1 | | 2 | 2 | | 3 | 3 | 2 | 2 | | |
| 6 | 1 | | 2 | 2 | | 3 | 3 | 2 | 2 | | |
| 7 | 1 | | 2 | 2 | | 3 | 3 | 2 | 2 | | |
| 8 | 1 | | 2 | 2 | | 3 | 3 | 2 | 2 | | |