Table 2. Number of Observations for Each Functional Groupa.
O2 | N3 | ONO2 | NNO2 | CNO2 | |
---|---|---|---|---|---|
O2 | 2 | 5 | 0 | 0 | 11 |
N3 | 5 | 19 | 1 | 10 | 23 |
ONO2 | 0 | 1 | 538 | 8 | 5 |
NNO2 | 0 | 10 | 8 | 397 | 84 |
CNO2 | 11 | 23 | 5 | 84 | 367 |
The diagonal shows the number with a single functional group, and off diagonal entries count those observations with multiple functional groups.