PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-02:28:10
G08     279.8          22.6               10.6 +/-    1.87      22.0 +/-    1.87  0.030 / 0.030
G10     30.1           62.8                9.6 +/-    0.60      10.7 +/-    0.60  0.020 / 0.020
G14     243.2          57.8               11.7 +/-    1.96      13.6 +/-    1.96  0.030 / 0.020
G18     76.1           45.8               10.5 +/-    0.43      14.0 +/-    0.43  0.030 / 0.020
G21     150.6          28.6               11.8 +/-    1.80      21.3 +/-    1.80  0.070 / 0.140
G24     48.1           20.9               10.4 +/-    2.49      22.4 +/-    2.49  0.070 / 0.130
G27     241.7          24.8               12.3 +/-    2.40      24.2 +/-    2.40  0.050 / 0.080
G31     181.8          15.7               13.2 +/-    3.11      32.2 +/-    3.11  0.050 / 0.060
G32     274.2          73.5               11.2 +/-    0.42      11.7 +/-    0.42  0.100 / 0.180