PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-09:43:10
G03     204.7          48.0                5.3 +/-    1.49       6.8 +/-    1.49  0.080 / 0.150
G07     265.6          21.8                4.3 +/-    1.42       9.0 +/-    1.42  0.080 / 0.120
G09     315.9          39.1                4.7 +/-    1.19       6.9 +/-    1.19  0.080 / 0.210
G16     65.7           59.4                5.2 +/-    0.34       6.0 +/-    0.34  0.090 / 0.210
G22     184.9          30.4                6.1 +/-    1.49      10.5 +/-    1.49  0.070 / 0.270
G23     343.8          70.2                5.2 +/-    0.93       5.5 +/-    0.93  0.090 / 0.290
G26     46.1           32.5                3.3 +/-    0.58       5.6 +/-    0.58  0.030 / 0.050
G27     126.1          17.8                4.7 +/-    2.13      10.9 +/-    2.13  0.040 / 0.050