Ya I’m sure my drip emmiters had the L/hr listed on them at one point, but at 15 years old, it has escaped me, and measuring the up and coming subsurface irrigation systems will prove difficult. But someone has already figured out the code for water flow meters, so I’ll give that a look for inclusion.
I wasn’t meaning to sound rude with the joules thing, it’s just a small measurement and would make for some really large number calculations. But being base 10, kilo-joules could be used like kilocalories on a cereal box.
If you look at the script in the first post it has a library in the zip for PM-ETo, solar radiation has 3 calculation methods available each with varying degrees of accuracy. The main script uses them in order from measured to least accurate, depending on data available.