PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-02:12:50
G02     44.2           45.6                7.7 +/-    0.69      10.3 +/-    0.69  0.040 / 0.060
G05     105.4          68.6                9.1 +/-    0.48       9.7 +/-    0.48  0.030 / 0.050
G12     190.0          54.5               12.2 +/-    0.94      14.6 +/-    0.94  0.030 / 0.050
G25     276.8          57.8                9.9 +/-    0.81      11.5 +/-    0.81  0.030 / 0.050
G29     315.0          36.4                9.0 +/-    0.85      14.0 +/-    0.85  0.030 / 0.070