PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-04:27:30
G02     51.7           38.6                4.4 +/-    1.35       6.6 +/-    1.35  0.190 / 0.300
G05     77.5           67.3                6.8 +/-    0.55       7.3 +/-    0.55  0.250 / 0.300
G12     189.0          46.3                7.5 +/-    0.72       9.9 +/-    0.72  0.040 / 0.060
G21     264.3          13.2                4.5 +/-   11.08      11.8 +/-   11.08  0.050 / 0.060
G25     251.9          57.7                4.4 +/-    2.11       5.1 +/-    2.11  0.060 / 0.050
G29     326.4          50.8                5.0 +/-    0.97       6.3 +/-    0.97  0.060 / 0.060