These bak directories contain a copy of all EPDEF/EPDIF data as it existed on this server.
From 2021-05-04 3:00PM - 3:30PM PST, I have copied the existing CDFs into the corresponding
directories below:

/home/elfin_moc/actual_data_products/ela/l1/epd/fast/electron/bak
/home/elfin_moc/actual_data_products/ela/l1/epd/fast/ion/bak
/home/elfin_moc/actual_data_products/elb/l1/epd/fast/electron/bak
/home/elfin_moc/actual_data_products/elb/l1/epd/fast/ion/bak

This is in preparation of a reprocessing of all EPD data that will be performed on this same
day. Its purpose is to introduce IBO updates.

