PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-15:42:30
G01     246.8          33.0               10.5 +/-    1.83      17.4 +/-    1.83  0.060 / 0.090
G03     314.3          52.4                8.8 +/-    0.60      10.8 +/-    0.60  0.060 / 0.080
G14     62.7           40.4                8.3 +/-    1.04      12.0 +/-    1.04  0.030 / 0.030
G16     160.7          22.4                7.9 +/-   17.30      16.5 +/-   17.30  0.030 / 0.030
G22     294.0          72.7                8.9 +/-    0.60       9.3 +/-    0.60  0.100 / 0.230
G23     291.0          24.2                8.8 +/-    1.45      17.6 +/-    1.45  0.090 / 0.210
G31     40.6           52.8                9.2 +/-    0.41      11.3 +/-    0.41  0.030 / 0.040
G32     81.4           19.3                8.3 +/-    1.95      18.6 +/-    1.95  0.040 / 0.030