PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-22:43:10
G10     256.6          31.5                7.8 +/-    1.74      13.2 +/-    1.74  0.040 / 0.040
G13     47.9           25.6                8.3 +/-    2.16      16.1 +/-    2.16  0.040 / 0.050
G15     78.4           57.8                8.4 +/-    0.55       9.7 +/-    0.55  0.130 / 0.540
G16     287.2          15.2                4.2 +/-    3.00      10.3 +/-    3.00  0.110 / 0.540
G20     259.7          24.3                4.6 +/-    3.30       9.2 +/-    3.30  0.090 / 0.260
G21     341.0          64.2                7.7 +/-    0.86       8.5 +/-    0.86  0.140 / 0.230
G26     260.0          12.8                7.7 +/-    2.47      20.1 +/-    2.47  0.020 / 0.030
G29     166.8          43.6                7.8 +/-    0.47      10.8 +/-    0.47  0.030 / 0.040