Table 1. Mean error of 6- and 4-variable reduced models compared with original model.
| Species Name | Mean Error (%) | |
| 6-Variable Model | 4-Variable Model | |
| Ligand | 0.4 | 0.4 |
| Gs | 0.1 | 0.1 |
| β1ARtot | 0.2 | 0.2 |
| β1ARd | 0.9 | 0.9 |
| β1ARp | 0.5 | 0.5 |
| Gsαgtptot | 0.3 | 0.3 |
| Gsαgtp | 1.7 | 1.7 |
| AC | 0.1 | 0.1 |
| cAMPtot | 1 | 1 |
| cAMPfree | 1.7 | 1.6 |
| PKA1 | 2.6 | 2.6 |
| PKA2 | 1.3 | 1.3 |
| PLBp | 3.8 | 11.5 |
| Inhib1ptot | 2.7 | 2.7 |
| Inhib1p | 3.1 | 3.1 |
| PP1 | 0.2 | 0.2 |
| LCCap | 2.2 | 2.2 |
| LCCbp | 2 | 2 |
| TnIp | 3.6 | 24.5 |
| Mean | 1.5 | 3 |
Errors for 19 of the original 25 state variables are shown. Not shown are Forskolin and IBMX (set to 0 µM for most conditions), PDE, β1ARfree, Gsαgdp, and Gsβγ (which were removed from or no longer necessary for the models).