PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/30-13:42:40
G02     58.6           32.9                3.1 +/-    1.80       5.2 +/-    1.80  0.030 / 0.020
G05     63.2           64.1                4.5 +/-    0.60       4.9 +/-    0.60  0.030 / 0.030
G12     186.9          36.4                6.2 +/-    0.93       9.6 +/-    0.93  0.130 / 0.250
G13     131.4          13.4                6.7 +/-    5.43      17.2 +/-    5.43  0.190 / 0.330
G15     164.1          10.7               -3.7 +/-   17.85     -10.2 +/-   17.85  0.050 / 0.070
G20     207.6          55.2                6.8 +/-    0.84       8.1 +/-    0.84  0.060 / 0.090
G21     270.8          19.8                5.5 +/-    2.11      12.1 +/-    2.11  0.040 / 0.050
G25     239.7          53.4                6.8 +/-    5.10       8.3 +/-    5.10  0.050 / 0.050
G29     330.8          56.8                4.0 +/-    0.44       4.6 +/-    0.44  0.150 / 0.310