Some support is provided for files produced by the World Data Centre for Solar Terrestrial Physics The format itself apparently has no name, but files in this format look something like the following:
Column formats and units - (Fixed format columns which are single space seperated.)
------------------------
Datetime (YYYY mm dd HHMMSS) %4d %2d %2d %6d -
%1s
aa index - 3-HOURLY (Provisional) %3d nT
2000 01 01 000000 67
2000 01 01 030000 32
...
Compressed files, or ones referred to as URLs, may be used.
This handler is experimental; it was reverse-engineered from looking at a couple of data files in the target format, and may not be very robust.