PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/06-12:12:30
G01     39.6           14.4                2.4 +/-    2.11       6.1 +/-    2.11  0.120 / 0.240
G06     173.1          40.8                6.0 +/-    1.43       8.7 +/-    1.43  0.130 / 0.280
G13     235.3          21.8                5.1 +/-    1.88      10.7 +/-    1.88  0.040 / 0.070
G17     356.7          71.4                5.0 +/-    0.71       5.3 +/-    0.71  0.040 / 0.070
G19     283.8          71.1                4.5 +/-    0.58       4.7 +/-    0.58  0.020 / 0.030
G24     316.4          19.0                3.3 +/-    1.39       7.5 +/-    1.39  0.020 / 0.030
G28     65.6           51.5                3.8 +/-    0.67       4.7 +/-    0.67  0.040 / 0.040
G30     155.3          27.6                5.2 +/-    1.47       9.6 +/-    1.47  0.030 / 0.040