PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/20-02:42:50
G08     311.7          17.9                9.6 +/-    1.99      22.1 +/-    1.99  0.070 / 0.080
G10     327.2          59.2                9.6 +/-    0.78      11.0 +/-    0.78  0.060 / 0.070
G14     217.0          26.2               14.7 +/-    2.53      28.0 +/-    2.53  0.100 / 0.180
G15     46.4           14.8                6.1 +/-    1.18      15.2 +/-    1.18  0.080 / 0.190
G20     352.5          64.7               10.7 +/-    0.52      11.7 +/-    0.52  0.040 / 0.040
G21     131.4          60.6               10.2 +/-    0.92      11.5 +/-    0.92  0.030 / 0.050
G24     75.7           29.6                8.6 +/-    0.52      15.1 +/-    0.52  0.040 / 0.030
G27     278.4          37.6               14.1 +/-    1.41      21.3 +/-    1.41  0.030 / 0.040
G32     221.0          51.7               14.2 +/-    1.23      17.5 +/-    1.23  0.050 / 0.090