PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-02:13:00
G02     229.1          71.6                6.4 +/-    0.33       6.7 +/-    0.33  0.050 / 0.070
G05     173.4          11.5                2.6 +/-   15.04       6.9 +/-   15.04  0.070 / 0.100
G06     43.3           69.7                6.3 +/-    0.49       6.7 +/-    0.49  0.040 / 0.050
G12     320.2          43.2                4.8 +/-    0.50       6.6 +/-    0.50  0.040 / 0.050
G17     66.6           24.4                4.9 +/-    2.13       9.8 +/-    2.13  0.260 / 0.420
G19     50.3           42.6                5.2 +/-    1.24       7.2 +/-    1.24  0.230 / 0.370
G24     249.4          37.8                6.6 +/-    1.75      10.0 +/-    1.75  0.040 / 0.060