PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/19-14:27:40
G02     28.9           58.4                8.0 +/-    0.55       9.2 +/-    0.55  0.050 / 0.060
G05     150.2          59.0                9.6 +/-    0.76      11.0 +/-    0.76  0.050 / 0.060
G06     53.0           16.5                5.8 +/-    1.76      13.9 +/-    1.76  0.030 / 0.030
G12     197.0          68.5                7.8 +/-    0.79       8.3 +/-    0.79  0.030 / 0.040
G19     97.6           13.6                9.4 +/-    1.38      24.2 +/-    1.38  0.030 / 0.050
G25     295.3          55.6                7.1 +/-    1.72       8.4 +/-    1.72  0.030 / 0.040
G29     306.2          26.8                5.3 +/-    3.06      10.0 +/-    3.06  0.100 / 0.230