PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-22:28:00
G01     320.1          14.3                9.1 +/-    2.60      22.9 +/-    2.60  0.130 / 0.400
G08     260.4          15.3               11.2 +/-    1.57      27.7 +/-    1.57  0.150 / 0.340
G10     71.7           56.2                9.2 +/-    0.70      10.8 +/-    0.70  0.060 / 0.090
G11     306.5          21.4                8.8 +/-    3.41      18.7 +/-    3.41  0.050 / 0.080
G14     286.1          70.0               10.5 +/-    0.55      11.1 +/-    0.55  0.120 / 0.220
G18     98.2           31.4               11.9 +/-    0.90      20.3 +/-    0.90  0.110 / 0.340
G27     225.9          11.2               13.4 +/-    4.74      36.6 +/-    4.74  0.050 / 0.060
G31     180.3          33.7               12.8 +/-    1.00      20.9 +/-    1.00  0.040 / 0.060
G32     350.0          71.4                9.8 +/-    0.71      10.3 +/-    0.71  0.030 / 0.030