PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-15:42:30
G02     34.2           53.9                6.8 +/-    0.61       8.2 +/-    0.61  0.030 / 0.030
G05     138.1          64.2                9.7 +/-    0.72      10.6 +/-    0.72  0.040 / 0.030
G06     55.4           12.3                5.0 +/-    1.10      13.2 +/-    1.10  0.040 / 0.040
G12     192.9          64.0                7.5 +/-    0.39       8.3 +/-    0.39  0.050 / 0.050
G25     292.8          54.6                6.7 +/-    0.80       8.0 +/-    0.80  0.040 / 0.060
G29     309.1          29.8                7.0 +/-    2.25      12.4 +/-    2.25  0.060 / 0.060