PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-22:43:00
G02     63.1           31.4                6.9 +/-    1.56      11.7 +/-    1.56  0.060 / 0.080
G05     52.8           58.7                8.3 +/-    0.63       9.5 +/-    0.63  0.050 / 0.080
G12     183.0          24.6               10.6 +/-    0.77      20.9 +/-    0.77  0.130 / 0.260
G13     124.5          19.6               11.9 +/-    1.90      26.4 +/-    1.90  0.120 / 0.310
G15     162.3          15.8               10.7 +/-    1.64      26.2 +/-    1.64  0.120 / 0.130
G20     210.8          69.0                9.5 +/-    0.46      10.1 +/-    0.46  0.110 / 0.130
G21     276.1          21.2                9.0 +/-    1.53      19.2 +/-    1.53  0.100 / 0.090
G25     221.5          45.1                8.9 +/-    2.10      12.0 +/-    2.10  0.130 / 0.070
G29     334.0          62.6                8.6 +/-    0.62       9.6 +/-    0.62  0.030 / 0.040