PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-08:57:50
G01     219.4          11.1                4.8 +/-    1.26      13.1 +/-    1.26  0.030 / 0.030
G03     257.3          71.1                6.4 +/-    0.91       6.7 +/-    0.91  0.040 / 0.040
G09     298.5          12.0                3.0 +/-   15.00       7.9 +/-   15.00  0.040 / 0.040
G14     93.3           19.3                3.6 +/-    3.19       8.0 +/-    3.19  0.030 / 0.040
G16     138.4          52.1                7.9 +/-    1.02       9.7 +/-    1.02  0.150 / 0.430
G22     201.4          62.4                7.1 +/-    0.86       7.9 +/-    0.86  0.170 / 0.370
G23     316.1          46.5                6.8 +/-    0.92       9.0 +/-    0.92  0.130 / 0.260
G26     82.5           54.2                7.4 +/-    0.40       8.9 +/-    0.40  0.140 / 0.270
G31     49.2           24.1                3.6 +/-    2.47       7.2 +/-    2.47  0.040 / 0.060