PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/16-21:12:40
G05     51.7           10.9                7.4 +/-    1.71      20.2 +/-    1.71  0.140 / 0.490
G10     241.6          20.2               13.8 +/-    2.13      30.2 +/-    2.13  0.140 / 0.680
G13     64.5           33.7                8.3 +/-    0.36      13.4 +/-    0.36  0.100 / 0.120
G15     110.2          56.7                9.8 +/-    0.42      11.5 +/-    0.42  0.110 / 0.140
G16     306.7          14.7                6.5 +/-    2.15      16.3 +/-    2.15  0.050 / 0.070
G20     256.8          43.3               10.0 +/-    1.69      13.8 +/-    1.69  0.040 / 0.070
G21     321.0          51.7               10.7 +/-    1.17      13.3 +/-    1.17  0.220 / 0.390
G26     279.2          18.9                9.7 +/-    1.43      21.9 +/-    1.43  0.130 / 0.340
G29     158.8          62.9                9.4 +/-    0.80      10.5 +/-    0.80  0.050 / 0.150