PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-00:12:40
G05     51.7           10.7                7.7 +/-    1.77      21.1 +/-    1.77  0.150 / 0.210
G10     241.2          18.0               11.3 +/-    2.69      26.1 +/-    2.69  0.340 / 0.260
G13     66.2           35.0               11.6 +/-    0.77      18.3 +/-    0.77  0.040 / 0.050
G15     115.4          56.4               12.7 +/-    0.67      15.0 +/-    0.67  0.060 / 0.050
G16     306.1          15.2                7.7 +/-    2.36      19.0 +/-    2.36  0.060 / 0.090
G20     250.0          28.0                8.8 +/-    2.23      16.1 +/-    2.23  0.060 / 0.080
G21     319.6          51.2                8.0 +/-    3.16       9.9 +/-    3.16  0.080 / 0.290
G26     278.1          19.6                9.6 +/-    1.83      21.4 +/-    1.83  0.080 / 0.240
G29     161.0          64.9               10.2 +/-    0.48      11.1 +/-    0.48  0.040 / 0.030