| general |  |  |  |  | Top level for general info about the model | Yes |  | 
|  | model |  |  |  | Model type lm or glm | Yes | lm | 
|  | version |  |  |  | Use: 2 | Yes | 2 | 
|  | type |  |  |  | Use:regression | Yes | regression | 
|  | residual |  |  |  | Model residual (If providing intervals) |  | 28 | 
|  | sigma2 |  |  |  | Sigma squared (If providing intervals) |  | 6.63 | 
|  | family |  |  |  | Family (glm only) |  |  | 
|  | link |  |  |  | Link (glm only) |  |  | 
|  | offset |  |  |  | Offset |  | am | 
|  | is_glm |  |  |  | Boolean, to identify a glm model | Yes | 0 | 
| terms |  |  |  |  | Top level for terms | Yes |  | 
|  | [index] |  |  |  | Index number, one entry per term | Yes | [[3]] | 
|  |  | label |  |  | Name of the field to be used | Yes | char_cyl6 | 
|  |  | coef |  |  | Coefficient value | Yes | -4.26 | 
|  |  | is_intercept |  |  | Boolean, indicates if it is intercept | Yes | 0 | 
|  |  | fields |  |  | Top level for fields impacted by term | Yes |  | 
|  |  |  | [index] |  | Index number, one entry per field | Yes | [[1]] | 
|  |  |  |  | type | Type of field, use: ‘conditional’, and ‘ordinary’ for
intercept | Yes | conditional | 
|  |  |  |  | col | Column name | Yes | char_cyl | 
|  |  |  |  | val | Value of the entry |  | cyl6 | 
|  |  |  |  | op | Operation, use: equal |  | equal | 
|  |  | qr |  |  | Top level for QR decomposition (If providing
intervals) |  |  | 
|  |  |  | qr_[n] |  | [n] for index, and expects the QR result |  | 0.4 |