Numerical data may be downloaded in various formats, which are described below.
ASCII data with a human readable file. Not always the easiest to parse by computer but self-explanatory. The data is separated from the header by a blank line. For riometer beam data and magenetometer data each line starts with the time (year, month day, hour, minute and seconds).
Two versions of Matlab data are available. If you are using MIA you should select "Matlab format, MIA object", otherwise select the struct version.
An object (or an array of objects) containing data from the
selected instrument(s). MIA objects may be loaded without the
MIA toolbox but warnings will be given for the unknown classes, and
object will be converted into
structs. All metadata from
MIA is preserved.
struct (or an array of
data from the selected instrument(s). Data is saved in a field called
data. Important metadata is preserved in the remaining
struct field names should be
gzip. The exact format varies according to the data archive selected. 5s resolution data files have a record header every hour, on the hour and store 1 day of data; if compressed the extension is
.dgz. 1s resolution data files have a record header every minute, on the minute, store 1 hour of data and if compressed the extension is
.gz. Note that these files are exact copies of the data archive files, the SAMNET ASCII files will not processed (filtered, change of temporal resolution etc.) regardless of what you requested. Other numerical data formats do honour the processing stages requested and will reflect numerical data used for the plotting routines.