| ionic conductivity at RH 95%, 298 K | 0.00797 S cm^-1 at 298 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 303 K | 0.00853 S cm^-1 at 303 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 308 K | 0.00882 S cm^-1 at 308 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 313 K | 0.00692 S cm^-1 at 313 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 318 K | 0.00799 S cm^-1 at 318 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 323 K | 0.00928 S cm^-1 at 323 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 328 K | 0.00934 S cm^-1 at 328 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 338 K | 0.00559 S cm^-1 at 338 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 348 K | 0.00831 S cm^-1 at 348 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 358 K | 0.0127 S cm^-1 at 358 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 368 K | 0.014 S cm^-1 at 368 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 373 K | 0.000629 S cm^-1 at 373 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 378 K | 0.000406 S cm^-1 at 378 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 383 K | 0.000264 S cm^-1 at 383 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| ionic conductivity at RH 95%, 393 K | 0.0001 S cm^-1 at 393 K, 95% RH | — | — | SI Table Exact Reported | S13 · Table S2 · Table S2 |
| high-temperature conductivity caveat | non-Arrhenius variation attributed to iodine species release | — | — | Text Qualitative | 3 · Results · Figure S7 |