PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-19:27:50
G01     55.9           28.7                6.9 +/-    0.85      12.4 +/-    0.85  0.040 / 0.060
G06     180.1          16.5               -2.6 +/-   43.22      -6.2 +/-   43.22  0.040 / 0.050
G07     142.8          13.3               12.7 +/-    1.92      32.9 +/-    1.92  0.120 / 0.330
G11     46.2           20.3                6.7 +/-    0.99      14.7 +/-    0.99  0.110 / 0.310
G13     257.3          34.5               11.4 +/-    1.25      18.3 +/-    1.25  0.120 / 0.290
G15     289.6          16.6                7.2 +/-    2.41      17.2 +/-    2.41  0.120 / 0.280
G17     273.9          78.4                9.8 +/-    0.51      10.0 +/-    0.51  0.120 / 0.270
G19     236.0          54.5               11.0 +/-    1.78      13.2 +/-    1.78  0.080 / 0.250
G28     33.7           58.0                8.7 +/-    0.86      10.0 +/-    0.86  0.040 / 0.080
G30     145.5          46.2                9.8 +/-    1.57      13.0 +/-    1.57  0.060 / 0.060