PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-20:42:50
G10     266.0          39.0               10.9 +/-    1.09      16.1 +/-    1.09  0.040 / 0.040
G13     42.1           18.2                8.1 +/-    0.94      18.6 +/-    0.94  0.040 / 0.060
G15     61.4           50.8               10.6 +/-    0.47      13.3 +/-    0.47  0.090 / 0.140
G16     280.0          13.0                9.0 +/-    1.85      23.4 +/-    1.85  0.090 / 0.150
G20     296.6          60.1                9.4 +/-    0.66      10.7 +/-    0.66  0.080 / 0.260
G21     358.0          70.3               10.4 +/-    0.64      11.0 +/-    0.64  0.100 / 0.320
G24     123.1          13.3               11.6 +/-    1.66      30.2 +/-    1.66  0.030 / 0.040
G27     319.5          17.4                8.4 +/-    1.19      19.6 +/-    1.19  0.030 / 0.040
G29     167.0          33.2               12.7 +/-    0.65      20.8 +/-    0.65  0.130 / 0.340