PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-09:42:40
G08     255.8          12.6                6.8 +/-    2.17      17.9 +/-    2.17  0.080 / 0.270
G10     82.9           51.1                4.5 +/-    0.60       5.6 +/-    0.60  0.130 / 0.310
G11     300.9          24.2                3.9 +/-    1.58       7.8 +/-    1.58  0.030 / 0.030
G14     303.8          71.5                3.8 +/-    0.46       4.0 +/-    0.46  0.050 / 0.070
G18     301.8          43.3                4.6 +/-    2.85       6.3 +/-    2.85  0.040 / 0.050
G20     107.0          27.7                5.7 +/-    1.91      10.5 +/-    1.91  0.050 / 0.080
G22     302.9          15.4                3.2 +/-    1.19       7.9 +/-    1.19  0.100 / 0.150
G31     176.0          43.2                7.2 +/-    1.34      10.0 +/-    1.34  0.110 / 0.170
G32     358.9          69.0                4.2 +/-    0.86       4.4 +/-    0.86  0.190 / 0.330