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About LISN // Objectives
LISN in order to establish itself as an observatory distributed, through geophysical instruments located in South America, has the main aims:

- To build and install the first Distributed Observatory across the western half of South America and provide real-time display of observable.
Data from all instruments will be transmitted in nearly real-time with a cadence of 15 minutes or less, to a central computer at the main headquarters of the Instituto Geofisico del Peru, in Lima. Data transfers may use site-dependent alternatives: phone line and a local Internet provider, DSL, cable or satellite link.

- To nowcast the state of the Low-latitude ionosphere in terms of TEC, scintillations, TEC depletions, bottomside F- and E-region densities.

Global maps of ionospheric total electron content (TEC)
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