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The idea is to request as much data as possible from the same tape file . The natural way to group requests would be:
all parameters, all levels, all time-steps for all dates of a month

Note: 'all' means 'all' that the user wants. It doesn't have to be all parameters.

• The objective of this example is to demonstrate how to iterate efficiently over some years, for a particular ERA interim, daily, pressure level request.
• At this point you may wish to have a look on the  UERRA SHMI availability
• The request below can be used as a starting point, however you need to keep in mind that you have to adapt it to your needseg to set the keyword, values according to your requirements (eg add or remove 'param', 'levtype', 'step' etc).
• In this way you can extend this example to download a longer period or even the whole ERA interim dataset.

You can use the variable 'target' to organise the requested data in separate files if you wish.