Open Access

Table 3

Unified S4 data file format for each S4 observation.

Column Description
datetime Day and time in format “yyyy-mm-dd hh:mm:ss”
prn Satellite identifier
az Azimuth (°)
el Elevation (°)
s4 S4 index from the C/A code in the L1 band
s4v Vertical projection of the S4 index
class Scintillation severity classification (0: null; 1: weak; 2: moderate; 3: strong)
station Acronym of the monitoring station
r_lat Monitoring station latitude (°)
r_lon Monitoring station longitude (°)
i_lat IPP latitude (°)
i_lon IPP longitude (°)
network LISN or INCT
p Spectral slope of the phase PSD in the 0.1–25 Hz range

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