PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-01:58:10
G02     49.4           41.1                9.3 +/-    1.14      13.3 +/-    1.14  0.030 / 0.050
G05     85.3           68.2               10.1 +/-    0.49      10.8 +/-    0.49  0.040 / 0.050
G12     187.5          46.9               13.0 +/-    0.65      17.1 +/-    0.65  0.020 / 0.030
G25     262.8          57.9               12.1 +/-    1.12      14.0 +/-    1.12  0.020 / 0.030
G29     319.2          41.7               10.3 +/-    1.32      14.6 +/-    1.32  0.040 / 0.040