PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-16:57:30
G02     29.8           57.6                8.3 +/-    0.45       9.6 +/-    0.45  0.040 / 0.060
G05     142.4          62.6               10.9 +/-    0.57      12.1 +/-    0.57  0.040 / 0.060
G06     54.9           13.7                7.2 +/-    1.10      18.4 +/-    1.10  0.030 / 0.060
G12     190.8          63.8                9.0 +/-    0.76       9.9 +/-    0.76  0.030 / 0.050
G19     99.7           12.6                9.3 +/-    1.12      24.5 +/-    1.12  0.070 / 0.140
G25     292.0          56.1                7.9 +/-    1.16       9.3 +/-    1.16  0.090 / 0.170
G29     308.0          28.3                5.8 +/-    1.17      10.6 +/-    1.17  0.030 / 0.040