Interface Homebrew Station to Weather Display

I am in the final stages of building a weather station and I would like to interface it to Weather Display. It seems the best way is via either currdat.lst or history.dat files, but I am open to other suggestions. Could someone tell me the fields in currdat.lst and history.dat files that are used by Weather Display? Also, if someone has format information on history.dat, that would be appreciated.
Thanks, Doug

Hi
another way is via uni the datain.ini file
check the universal.txt file for more info

I have WD 10.37S running with data feed by DATAIN38.INI. All seems to be working well except it seems to be losing rain. Over the last few hours, WD has shown .59 inches of rain while the source weather station shows 1.74 inches.

I assume that the rain value in DATAIN38.INI is the the amount of rain since the last record in mm. I have a log of the DATAIN38.INI records over that same period that total to 44.2mm (1.74 inches). The records are posted every 5 minutes. Suggestions?
Thanks,
Doug

WD will be looking for a change in the rain total from the data source
and that difference each time, it adds to its total, while its running