PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-21:28:00
G10     268.0          40.1               11.3 +/-    1.17      16.4 +/-    1.17  0.050 / 0.050
G13     41.3           16.8                8.1 +/-    3.13      19.2 +/-    3.13  0.040 / 0.040
G15     59.1           49.1                9.2 +/-    1.31      11.7 +/-    1.31  0.270 / 0.320
G16     278.4          12.4                9.9 +/-    1.75      26.0 +/-    1.75  0.190 / 0.310
G20     299.7          60.7                9.0 +/-    0.51      10.2 +/-    0.51  0.040 / 0.050
G21     2.0            71.5               10.1 +/-    0.68      10.6 +/-    0.68  0.030 / 0.050
G24     121.4          14.4               10.8 +/-    1.46      27.4 +/-    1.46  0.210 / 0.570
G27     318.8          18.8                8.9 +/-    2.01      20.3 +/-    2.01  0.180 / 0.440
G29     167.2          31.1                9.9 +/-    1.14      16.9 +/-    1.14  0.120 / 0.180