PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-20:43:00
G10     266.0          39.0                9.6 +/-    0.97      14.3 +/-    0.97  0.040 / 0.050
G13     42.1           18.2                8.9 +/-    2.92      20.5 +/-    2.92  0.060 / 0.030
G15     61.4           50.8               10.1 +/-    0.92      12.6 +/-    0.92  0.460 / 0.290
G16     280.0          13.0                8.3 +/-    1.42      21.7 +/-    1.42  0.390 / 0.240
G20     296.6          60.1                9.6 +/-    0.76      10.9 +/-    0.76  0.040 / 0.040
G21     358.0          70.3               11.4 +/-    0.65      12.0 +/-    0.65  0.030 / 0.040
G24     123.1          13.3               12.1 +/-    2.19      31.5 +/-    2.19  0.120 / 0.330
G27     319.5          17.4                9.4 +/-    2.60      21.9 +/-    2.60  0.250 / 0.530
G29     167.0          33.2               11.7 +/-    1.01      19.3 +/-    1.01  0.160 / 0.270