PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-05:27:40
G02     49.8           40.3                2.0 +/-    1.02       2.9 +/-    1.02  0.260 / 0.440
G05     84.8           68.4                3.2 +/-    0.64       3.4 +/-    0.64  0.400 / 0.460
G12     189.8          48.9                5.1 +/-    0.84       6.6 +/-    0.84  0.040 / 0.040
G21     262.6          12.3                2.0 +/-   12.52       5.4 +/-   12.52  0.040 / 0.050
G25     255.8          58.6                4.5 +/-    1.74       5.2 +/-    1.74  0.040 / 0.040
G29     323.9          47.8                2.3 +/-    0.62       3.0 +/-    0.62  0.050 / 0.050