1) The result of ionography 
An ionogram is a display of the data produced by an ionosonde. It is a graph of the virtual height of the ionosphere plotted against frequency. Ionograms are often converted into electron density profiles. Data from ionograms may be used to measure changes in the Earth`s ionosphere due to space weather events. == See also == ...
the result of ionography.
the record provided by an ionosonde and representing the virtual heights as a function of frequency
The result of ionography. ... (18 Nov 1997) ... 
Type: Term Pronunciation: ī′on-ō-gram Synonyms: electropherogram