PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/11-14:58:10
G02     57.7           33.8                5.8 +/-    0.78       9.4 +/-    0.78  0.030 / 0.040
G05     65.6           65.4                7.8 +/-    0.33       8.5 +/-    0.33  0.030 / 0.040
G12     186.9          37.1               10.4 +/-    1.39      15.8 +/-    1.39  0.110 / 0.260
G13     132.1          12.9               10.9 +/-    2.20      28.5 +/-    2.20  0.170 / 0.250
G20     206.8          55.1               11.0 +/-    0.91      13.1 +/-    0.91  0.070 / 0.080
G21     269.8          18.4                7.0 +/-    1.28      16.1 +/-    1.28  0.060 / 0.080
G25     240.0          53.8               10.1 +/-    1.78      12.2 +/-    1.78  0.050 / 0.060
G29     331.2          57.0                6.8 +/-    0.60       8.0 +/-    0.60  0.050 / 0.060