PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-02:12:00
G02     49.7           40.8                9.8 +/-    1.16      14.0 +/-    1.16  0.040 / 0.050
G05     84.3           68.1               11.5 +/-    0.49      12.2 +/-    0.49  0.030 / 0.050
G12     187.5          46.7               15.0 +/-    0.47      19.7 +/-    0.47  0.030 / 0.030
G25     262.2          57.8               12.9 +/-    1.29      14.9 +/-    1.29  0.030 / 0.030
G29     319.5          42.0               12.6 +/-    0.75      17.8 +/-    0.75  0.040 / 0.060