# Spectrograms

## THEMIS

### Particle spectrograms with the [ESA Electrostatisc Analyzer](http://themis.ssl.berkeley.edu/instrument_esa.shtml) have different [Modes and Data Products](http://themis.ssl.berkeley.edu/esa_modes_dataproducts.shtml)
* modes : f=full,  r=reduced, b=burst
* pei?_en_eflux, = ion energy flux spectrogram
* pee?_en_eflux, = ion energy flux spectrogram