Proton Flux:

The number of protons 
of different energy 
levels (the different 
colors) flowing past 
the sensor per unit 
time.

Electron Flux:

The same as 
above, but for
electrons.

The measure of 
compression 
(increasing Hp)or 
rareification of 
the Earth's magnetic 
field lines.

Est. Kp:

The estimated 
planetary K Index.