PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/16-11:27:40
G01     125.4          12.9                2.5 +/-    2.15       6.4 +/-    2.15  0.030 / 0.040
G07     59.3           69.1                3.6 +/-    0.39       3.8 +/-    0.39  0.030 / 0.050
G08     48.1           36.2                1.1 +/-    0.87       1.7 +/-    0.87  0.030 / 0.040
G09     176.1          31.7                4.7 +/-    0.76       7.9 +/-    0.76  0.030 / 0.030
G11     114.6          36.5                4.5 +/-    1.31       6.9 +/-    1.31  0.130 / 0.310
G13     320.5          13.5                1.5 +/-    1.14       3.9 +/-    1.14  0.130 / 0.290
G17     199.7          18.1                4.5 +/-    1.17      10.4 +/-    1.17  0.140 / 0.320
G18     101.3          17.5                2.7 +/-    1.08       6.3 +/-    1.08  0.120 / 0.410
G28     279.0          53.8                5.2 +/-    0.52       6.3 +/-    0.52  0.090 / 0.320
G30     333.1          60.9                2.5 +/-    0.56       2.9 +/-    0.56  0.090 / 0.280