PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-15:57:50
G02     41.7           48.2                8.1 +/-    0.25      10.4 +/-    0.25  0.030 / 0.030
G05     126.4          68.1               10.0 +/-    0.52      10.7 +/-    0.52  0.020 / 0.030
G06     58.6           11.2                8.2 +/-    2.50      22.4 +/-    2.50  0.030 / 0.050
G12     193.3          58.2               10.1 +/-    2.28      11.7 +/-    2.28  0.040 / 0.060
G20     200.1          35.3               10.1 +/-    0.94      16.0 +/-    0.94  0.070 / 0.110
G25     277.5          58.8               10.7 +/-    0.78      12.2 +/-    0.78  0.080 / 0.120
G29     316.7          39.9                9.7 +/-    1.26      14.2 +/-    1.26  0.050 / 0.060