[**solar-spa v2.0.1**](../README.md) *** [solar-spa](../README.md) / SPA\_ZA\_INC # Variable: SPA\_ZA\_INC > `const` **SPA\_ZA\_INC**: `1` Defined in: [types.ts:4](https://github.com/acamarata/solar-spa/blob/3c848806ab852464d76baf7e3fc0ca58f5e42fd9/src/types.ts#L4) Compute zenith, azimuth, and incidence angle.