PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/29-02:28:10
G02     36.7           52.4                8.0 +/-    1.00       9.8 +/-    1.00  0.040 / 0.030
G05     130.5          64.5                9.9 +/-    0.58      10.8 +/-    0.58  0.030 / 0.040
G06     55.3           13.8                5.8 +/-    2.51      14.9 +/-    2.51  0.030 / 0.030
G12     196.6          65.2                9.9 +/-    0.42      10.8 +/-    0.42  0.030 / 0.030
G25     294.1          54.2                8.3 +/-    3.06      10.0 +/-    3.06  0.190 / 0.220
G29     308.8          29.3                6.6 +/-    1.48      11.7 +/-    1.48  0.110 / 0.160