PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-13:43:00
G02     39.4           50.2                6.2 +/-    0.62       7.8 +/-    0.62  0.030 / 0.040
G05     131.5          66.0                9.5 +/-    0.62      10.3 +/-    0.62  0.020 / 0.040
G06     56.0           15.1                5.1 +/-    1.00      12.5 +/-    1.00  0.030 / 0.040
G12     196.7          62.6                8.7 +/-    0.71       9.7 +/-    0.71  0.030 / 0.040
G20     199.9          30.6                9.9 +/-    0.93      17.1 +/-    0.93  0.070 / 0.150
G25     286.4          57.1                9.0 +/-    0.59      10.4 +/-    0.59  0.080 / 0.160
G29     314.1          37.0                6.6 +/-    1.65      10.2 +/-    1.65  0.160 / 0.310