PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-01:57:20
G02     44.6           45.2                9.2 +/-    0.56      12.3 +/-    0.56  0.070 / 0.060
G05     103.6          68.7               11.3 +/-    0.45      12.1 +/-    0.45  0.060 / 0.050
G12     189.6          53.7               14.1 +/-    1.58      17.0 +/-    1.58  0.030 / 0.050
G25     275.5          57.9               12.1 +/-    0.85      14.0 +/-    0.85  0.030 / 0.050
G29     315.4          36.8               11.1 +/-    1.13      17.0 +/-    1.13  0.040 / 0.050