PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-17:43:00
G02     35.4           53.0                8.1 +/-    1.00       9.9 +/-    1.00  0.050 / 0.050
G05     129.9          66.2                9.3 +/-    0.48      10.0 +/-    0.48  0.040 / 0.060
G06     56.8           10.7                7.4 +/-    3.47      20.3 +/-    3.47  0.170 / 0.300
G12     193.0          62.1               10.1 +/-    0.60      11.3 +/-    0.60  0.170 / 0.440
G25     288.8          55.8                7.7 +/-    1.90       9.1 +/-    1.90  0.040 / 0.050
G29     311.0          32.1                8.6 +/-    0.99      14.5 +/-    0.99  0.040 / 0.040