PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-08:12:50
G01     237.7          27.1                8.9 +/-    1.81      16.6 +/-    1.81  0.040 / 0.030
G03     310.0          55.9                4.7 +/-    2.19       5.6 +/-    2.19  0.030 / 0.030
G14     72.0           35.0                4.1 +/-    1.50       6.6 +/-    1.50  0.090 / 0.120
G16     154.0          32.2                6.9 +/-    1.45      11.5 +/-    1.45  0.080 / 0.180
G18     212.0          17.2                6.2 +/-    4.53      14.6 +/-    4.53  0.070 / 0.110
G22     266.5          75.8                6.4 +/-    0.34       6.6 +/-    0.34  0.070 / 0.100
G23     297.4          28.9                5.6 +/-    1.56      10.0 +/-    1.56  0.050 / 0.090
G26     117.7          48.3                6.1 +/-    1.17       7.8 +/-    1.17  0.060 / 0.110
G31     41.7           42.9                3.6 +/-    1.70       5.1 +/-    1.70  0.090 / 0.110
G32     89.0           13.2                3.0 +/-    3.76       7.8 +/-    3.76  0.100 / 0.110