PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-01:28:00
G10     289.3          48.3                9.4 +/-    1.27      12.2 +/-    1.27  0.040 / 0.040
G15     47.7           34.8                8.6 +/-    0.49      13.6 +/-    0.49  0.040 / 0.040
G18     342.8          66.7                8.9 +/-    1.18       9.6 +/-    1.18  0.070 / 0.150
G20     68.3           20.2                9.6 +/-    1.16      21.1 +/-    1.16  0.060 / 0.170
G21     77.1           76.4               11.7 +/-    0.50      12.0 +/-    0.50  0.040 / 0.050
G24     104.4          24.2                9.1 +/-    1.08      18.0 +/-    1.08  0.040 / 0.060
G27     304.1          32.8                9.9 +/-    1.96      16.3 +/-    1.96  0.100 / 0.280
G29     167.5          10.3               11.9 +/-    1.27      32.9 +/-    1.27  0.100 / 0.280
G32     209.2          26.0               13.2 +/-    1.46      25.2 +/-    1.46  0.070 / 0.110