This is probably the most fundamental/basic/useful analysis of the data.

It allows you to pick one category, and then shows the data on a map
(for 1 given date - the default date is the most recent one).

From the map, you can click on any of the 24x24 geographical locations
(click on the colored dot), and it will drilldown and show you all
the time-series data available for the selected category of data
in that location (some series have 'missing' data, but most have
values for all the mid-month dates during the 6-year period).

When viewing the time-series, you can click on a dot, and it will
show you the map for that particular date.

You can drill into the maps & plots as many times as you want,
to dice & slice, and investigate the data.

Also, when viewing the map, you can click on the "timeline glyph"
at the top/right of the map, and that will launch the animation of
the selected category of data.

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Some 'interesting' data ...

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Select "Temperature"
Select the dark blue dot on the bottom row (long=66.2, lat=-21.2)
Why does the temperature go "flat" after 16jun1998 ???

Select "Pressure"
Select a dark pink dot in mid-Mexico or the US Rockies (such as 101.2, 23.8)
Why does the pressure jump "up" after 16jun1998 ???

I think there is a problem with the data, or with some of the instruments
collecting the data, after 16jun1998!  (only for certain areas!)

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To see some 'missing' data...

Select "Cloudlow"
Notice there are some empty dots in the lower parts of South America - these
represent "missing" data -- you can click on them to see the time-series plot
for all the data for that long/lat location.  Note that in the time-series
plot, I use the sas/graph gplot "skipmiss" option, to make a break in the
line at the missing values, rather than connecting the line continuously.

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