PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-20:13:10
G13     40.5           15.5                8.8 +/-    2.55      21.6 +/-    2.55  0.040 / 0.050
G15     57.1           47.5               10.8 +/-    0.57      14.1 +/-    0.57  0.040 / 0.040
G16     276.5          11.9               11.4 +/-    3.99      30.5 +/-    3.99  0.120 / 0.410
G20     304.0          61.8               10.8 +/-    0.77      12.1 +/-    0.77  0.170 / 0.550
G21     6.5            72.5               10.9 +/-    1.13      11.4 +/-    1.13  0.030 / 0.040
G24     120.3          15.3               16.0 +/-    2.45      39.5 +/-    2.45  0.030 / 0.040
G27     318.0          20.2                8.5 +/-    1.76      18.7 +/-    1.76  0.220 / 0.520
G29     167.5          29.6               14.4 +/-    1.35      25.4 +/-    1.35  0.350 / 0.650
G32     204.2          11.3               -7.4 +/-   46.84     -20.0 +/-   46.84  0.130 / 0.000