PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-17:27:10
G02     43.7           46.2                6.9 +/-    0.75       9.1 +/-    0.75  0.040 / 0.060
G05     101.9          70.1                9.1 +/-    0.83       9.7 +/-    0.83  0.050 / 0.060
G12     187.8          50.9                9.9 +/-    1.18      12.3 +/-    1.18  0.040 / 0.050
G25     269.4          58.1                8.9 +/-    0.37      10.2 +/-    0.37  0.030 / 0.060
G29     317.6          39.7                7.5 +/-    1.83      10.9 +/-    1.83  0.070 / 0.070