PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-17:28:00
G02     43.7           46.2                7.4 +/-    0.82       9.8 +/-    0.82  0.060 / 0.050
G05     101.9          70.1                8.8 +/-    0.74       9.3 +/-    0.74  0.050 / 0.060
G12     187.8          50.9               10.2 +/-    0.60      12.8 +/-    0.60  0.040 / 0.050
G25     269.4          58.1                9.3 +/-    0.63      10.8 +/-    0.63  0.040 / 0.040
G29     317.6          39.7                6.2 +/-    1.00       9.1 +/-    1.00  0.050 / 0.060