| competitiveness | Electoral Competitiveness |
| concentration | Electoral Concentration |
| enp | Effective Number of Parties (ENP) |
| pns | Party Nationalization Score (PNS) |
| psns | Party System Nationalization Score (PSNS) |
| seats | Allocating Seats by any method |
| seats_ha | Allocating Seats - Highest Averages |
| seats_lr | Allocating Seats - Largest Remainders |
| volatility | Electoral Volatility |