PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-16:28:10
G02     34.0           54.5               11.4 +/-    0.71      13.7 +/-    0.71  0.030 / 0.030
G05     137.0          65.3               12.1 +/-    1.11      13.2 +/-    1.11  0.030 / 0.040
G06     56.8           11.3                9.3 +/-    1.21      25.2 +/-    1.21  0.030 / 0.050
G12     189.4          60.2               12.6 +/-    0.59      14.3 +/-    0.59  0.030 / 0.040
G19     102.5          10.2                9.8 +/-    2.04      27.2 +/-    2.04  0.040 / 0.060
G25     285.2          58.0               12.3 +/-    1.35      14.3 +/-    1.35  0.040 / 0.050
G29     310.5          31.1               10.4 +/-    1.02      17.8 +/-    1.02  0.150 / 0.270