meteohub.de

I am trying to write a perl script to convert LWC data to meteohub raw format but a few items are not fully described in the meteohub manual. Anybody help me on these

1. Solar sensor type takes two parameters, the first is radiation (W/m2), anybody know what the second is?
2. On the thb sensor type their is a dew point parameter. I presume this has no meaning if the thb sensor in question measures indoor data?
3. How is the thb forecast token used? For me it registers 0, 2, 3 or -1 I'm guessing these equate to the fc* icons in the meteohub graphs directory plus -1 = not defined. Am I right?

1) last one is ET (just in case you have a vantage weather station)
2) thb is usually an indoor sensor measuring temp, hum and pressure. Many stations report dew, to cover that information it is also in here. You can easily compute dew from temp and hum.
3) yep

Thanks,
Good news about ET, I was about to calculate it myself, and now you have saved me the trouble.