PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-08:12:30
G07     340.6          60.9                5.1 +/-    0.69       5.7 +/-    0.69  0.040 / 0.040
G08     101.2          53.0                6.6 +/-    0.41       8.1 +/-    0.41  0.030 / 0.040
G09     187.0          71.2                5.8 +/-    0.63       6.1 +/-    0.63  0.110 / 0.110
G11     145.1          15.2                4.6 +/-    2.37      11.3 +/-    2.37  0.100 / 0.090
G23     155.4          37.2                5.5 +/-    0.87       8.4 +/-    0.87  0.030 / 0.020
G27     53.5           30.8                4.3 +/-    1.76       7.5 +/-    1.76  0.030 / 0.030
G28     236.9          24.8                6.8 +/-    1.61      13.3 +/-    1.61  0.030 / 0.040
G30     303.2          36.0                5.7 +/-    1.66       8.8 +/-    1.66  0.040 / 0.040