| Integer | nC | size(extraPropertiesNames, 1) | Number of extra (outside of standard mass-balance) transported properties |
| Real[nC] | C_nominal | cat(1, data_PG.C_nominal, data_FP.C_nominal, data_TR.C_nominal, data_CP.C_nominal) | Default for the nominal values for the extra properties |
| Integer | iPG | {1, data_PG.nC} | First and last index of precursors groups |
| Integer | iFP | {iPG[2] + 1, iPG[2] + data_FP.nC} | First and last index of fission products |
| Integer | iTR | {iFP[2] + 1, iFP[2] + data_TR.nC} | First and last index of tritium contributors |
| Integer | iCP | {iTR[2] + 1, iTR[2] + data_CP.nC} | First and last index of corrosion products |
| SIadd.InverseTime | lambdas | cat(1, data_PG.lambdas, data_FP.lambdas, data_TR.lambdas, data_CP.lambdas) | Decay constant |
| SI.Energy[nC] | w_near_decay | cat(1, data_PG.w_near_decay, data_FP.w_near_decay, data_TR.w_near_decay, data_CP.w_near_decay) | Decay (near-field) energy |
| SI.Energy[nC] | w_far_decay | cat(1, data_PG.w_far_decay, data_FP.w_far_decay, data_TR.w_far_decay, data_CP.w_far_decay) | Decay (far-field) energy |
| Real | p_PG | cat(2, data_PG.parents, fill(0, data_PG.nC, nC - data_PG.nC)) | |
| Real | p_FP | cat(2, fill(0, data_FP.nC, nC - data_FP.nC), data_FP.parents) | |
| Real[data_TR.nC,nC] | p_TR | cat(2, fill(0, data_TR.nC, nC - data_TR.nC), data_TR.parents) | |
| Real | p_CP | cat(2, fill(0, data_CP.nC, nC - data_CP.nC), data_CP.parents) | |
| Real | parents | cat(1, p_PG, p_FP, p_TR, p_CP) | |
| Tritium Balance |
| Integer | iH3 | TRANSFORM.Utilities.Strings.index("1-H-3", extraPropertiesNames) | Index of tritium (1-H-3) in fission products array |