PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/24-19:12:50
G02     28.7           59.3               14.4 +/-    0.67      16.5 +/-    0.67  0.030 / 0.050
G05     152.6          57.6               15.3 +/-    0.83      17.7 +/-    0.83  0.030 / 0.040
G06     52.7           17.8               10.4 +/-    1.36      24.1 +/-    1.36  0.040 / 0.060
G12     202.1          69.9               12.2 +/-    0.94      12.9 +/-    0.94  0.040 / 0.060
G20     197.7          24.9               16.2 +/-    2.43      31.7 +/-    2.43  0.030 / 0.040
G25     296.0          55.6               13.4 +/-    2.38      15.9 +/-    2.38  0.030 / 0.050
G29     307.0          28.6               11.3 +/-    1.42      20.4 +/-    1.42  0.090 / 0.120