PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/21-00:12:40
G10     270.6          41.4               11.0 +/-    1.22      15.6 +/-    1.22  0.240 / 0.440
G13     40.3           15.1                7.6 +/-    2.21      18.9 +/-    2.21  0.180 / 0.290
G15     56.0           46.2                8.1 +/-    1.13      10.7 +/-    1.13  0.040 / 0.040
G16     277.0          11.5                7.0 +/-   13.66      18.8 +/-   13.66  0.040 / 0.030
G20     302.7          61.1                9.6 +/-    0.57      10.8 +/-    0.57  0.270 / 0.260
G21     8.8            73.0                9.4 +/-    0.70       9.7 +/-    0.70  0.290 / 0.210
G24     118.9          15.8                9.3 +/-    1.06      22.6 +/-    1.06  0.140 / 0.410
G27     317.8          20.4                7.6 +/-    2.41      16.5 +/-    2.41  0.130 / 0.440
G29     167.1          27.7               10.8 +/-    1.77      19.9 +/-    1.77  0.080 / 0.060
G32     204.8          10.5              -15.8 +/-   20.62     -43.6 +/-   20.62  0.100 / 0.070