UPDATED.  CoCoRaHS_to_ZRXP.tsk now inserts a small value for Trace data entry, 0.005 inches for all data types.  Data is downloaded in inches and converted in the import agent to mm.  There may be a way to specify in the DL URL that you want mm, but I didn't bother looking into this.
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To get all data for all Ontario stations for the past 30 days run task CoCoRHaS_DL.tsk on a daily schedule.

To convert/import to WISKI, run task CoCoRaHS_to_ZRXP.tsk.

You can go in and edit the VBA code to change the start and end dates to get historic data, but I have already done this, going back to 2013.  I don't believe there is any older data out there, but I may be wrong.  In any case, the file is too big to post here, so go get it here:  https://ftp.thamesriver.on.ca/WISKI/CoCoRHaS_2022_6_2_hist.csv

Requires login:
Username: publicfiles
pw: WeeneWed4!

File will disappear on July 02, so if interested, get it before then!  Any questions, or if you are having issues getting it to work etc, let me know. PM likely best, helstenm@thamesriver.on.ca

Good luck!

I see nobody has downloaded this, which is good.  I noticed yesterday that the datafiles have T's in them for trace, and I am trying to adapt the CoCoRaHS to ZRXP script to convert these to small values.  Will repost once that is done.