Update README.md

README.md

@@ -17,10 +17,14 @@ Weather data functions:
  - `cdd()`: calculate the cooling degree days.
  - `hdd()`: calculate the heating degree days.
  - `gdd()`: calculate the growing degree days.
+ - `extraterrestrial_radiation()`: calculate the extraterrestrial radiation.
  - `clearsky_radiation()`: calculate the clear sky radiation.
  - `chillinghours()`: calculate the chilling hours.
  - `dailychillinghours()`: calculate the chilling hours based on daily data.
  - `et0pm()`: calculate the potential evapotranspiration using the Penman-Monteith method.
+ - `et0h()`: calculate the potential evapotranspiration using the Hargreaves method.
+  - `et0hs()`: calculate the potential evapotranspiration using the Hargreaves-Samani method.
+  - `et0pan()`: calculate the potential evapotranspiration using the Pan evaporation method. It also includes the option to calculate pan coefficient (Kp)
 
 ## Installation
 
@@ -37,4 +41,4 @@ see the vignettes for examples of how to use the functions.
 
 ``` r
 browseVignettes("agrtools")
-```
+```