PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-17:27:50
G02     34.0           54.0                9.8 +/-    0.66      11.8 +/-    0.66  0.030 / 0.040
G05     133.0          65.4               12.0 +/-    0.95      13.1 +/-    0.95  0.040 / 0.040
G06     56.1           11.6                7.9 +/-    2.41      21.2 +/-    2.41  0.040 / 0.050
G12     193.8          63.4               10.0 +/-    1.10      11.0 +/-    1.10  0.040 / 0.060
G25     290.9          55.2                9.2 +/-    0.75      10.9 +/-    0.75  0.230 / 0.260
G29     310.2          31.1                9.8 +/-    1.43      16.8 +/-    1.43  0.180 / 0.310