| comments | Description | Example |
|---|---|---|
Required: False Units: None Type: string Style: free form Default: None |
any comments on declination | estimated from WMM 2016 |
| model | Description | Example |
|---|---|---|
Required: True Units: None Type: string Style: controlled vocabulary Default: WMM |
geomagnetic reference model used to calculate declination | WMM |
| epoch | Description | Example |
|---|---|---|
Required: False Units: None Type: string Style: free form Default: None |
Epoch for which declination was approximated in. | 2020 |
| value | Description | Example |
|---|---|---|
Required: True Units: degrees Type: float Style: number Default: 0.0 |
declination angle relative to geographic north positive clockwise | 12.3 |