PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-15:43:10
G01     248.2          33.8               11.6 +/-    1.40      18.9 +/-    1.40  0.050 / 0.080
G03     314.9          51.1                8.9 +/-    0.93      11.1 +/-    0.93  0.040 / 0.080
G11     237.7          11.3               11.6 +/-    3.90      31.4 +/-    3.90  0.030 / 0.030
G14     61.3           41.2                7.4 +/-    0.99      10.6 +/-    0.99  0.020 / 0.030
G16     161.4          21.1               -5.3 +/-   13.09     -11.3 +/-   13.09  0.040 / 0.030
G22     297.3          71.5                8.5 +/-    0.45       8.9 +/-    0.45  0.040 / 0.030
G23     289.9          23.3                8.1 +/-    0.95      16.4 +/-    0.95  0.100 / 0.260
G31     40.7           54.2                8.3 +/-    0.69       9.9 +/-    0.69  0.040 / 0.050
G32     80.2           20.2                9.4 +/-    1.37      20.7 +/-    1.37  0.060 / 0.060