PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/11-14:12:30
G02     41.3           48.4                4.7 +/-    0.54       6.0 +/-    0.54  0.030 / 0.040
G05     126.2          67.5                7.9 +/-    0.46       8.4 +/-    0.46  0.020 / 0.030
G06     57.5           13.1                3.8 +/-    0.92       9.8 +/-    0.92  0.040 / 0.040
G12     194.7          59.8                7.1 +/-    1.18       8.1 +/-    1.18  0.030 / 0.040
G20     200.3          33.3                8.3 +/-    1.94      13.6 +/-    1.94  0.060 / 0.130
G25     281.4          58.0                7.2 +/-    0.67       8.3 +/-    0.67  0.060 / 0.140
G29     316.1          39.3                5.5 +/-    1.28       8.1 +/-    1.28  0.070 / 0.120