PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-02:12:50
G02     42.8           46.9                6.0 +/-    0.67       7.9 +/-    0.67  0.030 / 0.040
G05     111.0          68.2                9.2 +/-    0.94       9.8 +/-    0.94  0.030 / 0.050
G12     190.9          56.6                9.8 +/-    0.47      11.5 +/-    0.47  0.030 / 0.030
G25     280.5          57.4               12.6 +/-    1.62      14.7 +/-    1.62  0.030 / 0.030
G29     313.8          35.0                7.8 +/-    1.46      12.4 +/-    1.46  0.040 / 0.040