PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-20:28:00
G10     262.9          34.9               20.2 +/-    1.54      32.1 +/-    1.54  0.200 / 0.530
G13     44.6           22.6               13.6 +/-    1.60      28.1 +/-    1.60  0.190 / 0.550
G15     63.5           51.2               17.8 +/-    0.89      22.2 +/-    0.89  0.150 / 0.370
G16     287.1          12.1               18.1 +/-    2.07      48.2 +/-    2.07  0.110 / 0.340
G18     293.7          63.3               17.6 +/-    0.55      19.4 +/-    0.55  0.040 / 0.050
G20     51.8           37.9               15.3 +/-    0.37      23.0 +/-    0.37  0.040 / 0.050
G21     359.9          70.6               17.8 +/-    0.83      18.7 +/-    0.83  0.110 / 0.140
G24     124.6          11.6               -4.9 +/-   52.54     -13.2 +/-   52.54  0.110 / 0.130
G27     319.4          17.3               15.3 +/-    1.28      36.0 +/-    1.28  0.070 / 0.280
G29     165.4          30.3               19.7 +/-    1.72      34.3 +/-    1.72  0.070 / 0.270