PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-21:42:50
G02     29.3           58.5               10.0 +/-    0.73      11.5 +/-    0.73  0.030 / 0.030
G05     142.8          59.9               11.3 +/-    0.57      12.9 +/-    0.57  0.030 / 0.030
G06     52.7           16.6                7.8 +/-    1.25      18.8 +/-    1.25  0.200 / 0.160
G12     196.5          69.2                9.9 +/-    0.33      10.5 +/-    0.33  0.170 / 0.260
G19     96.9           13.6               10.3 +/-    2.13      26.5 +/-    2.13  0.120 / 0.120
G25     300.8          51.7                9.6 +/-    1.93      11.9 +/-    1.93  0.080 / 0.120
G29     304.8          24.8                9.6 +/-    0.88      18.9 +/-    0.88  0.140 / 0.260