[gradsusr] station data help

[Zilore Mumba]

Once more I would like to request those who have worked on station data,
how the pressure change, weather and clouds should be written. Attached to
this mail is a data file I have used. I have tried several ways (trial and
error) but I do not manage to plot beyond t, Td and P. Tendency is always
plotted as +0 whatever I put there.
I have gone through several years archives, no success.
Help will be appreciated
Zilore Mumba
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