PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-10:12:50
G01     121.0          15.2                3.7 +/-    2.36       9.2 +/-    2.36  0.030 / 0.030
G07     75.7           66.3                5.6 +/-    0.53       6.0 +/-    0.53  0.030 / 0.030
G08     48.5           38.6                2.9 +/-    0.91       4.4 +/-    0.91  0.110 / 0.260
G09     177.2          30.2                6.4 +/-    0.98      11.2 +/-    0.98  0.190 / 0.310
G11     112.5          39.4                5.0 +/-    0.90       7.4 +/-    0.90  0.080 / 0.100
G13     318.8          17.6                4.3 +/-    2.15      10.0 +/-    2.15  0.090 / 0.120
G17     201.3          17.4                4.9 +/-    2.55      11.5 +/-    2.55  0.040 / 0.060
G18     97.2           19.3                4.4 +/-    1.51       9.9 +/-    1.51  0.040 / 0.050
G28     277.4          50.8                6.0 +/-    2.57       7.5 +/-    2.57  0.110 / 0.200
G30     339.2          65.3                5.0 +/-    0.46       5.5 +/-    0.46  0.110 / 0.240