PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/21-22:12:40
G10     276.5          44.5               11.4 +/-    0.99      15.4 +/-    0.99  0.040 / 0.040
G13     38.5           11.1                4.8 +/-   12.84      13.1 +/-   12.84  0.040 / 0.040
G15     52.5           42.9                8.3 +/-    0.78      11.5 +/-    0.78  0.210 / 0.410
G20     314.7          63.2                8.1 +/-    0.60       8.9 +/-    0.60  0.110 / 0.310
G21     23.7           75.5                9.4 +/-    0.78       9.6 +/-    0.78  0.040 / 0.060
G24     115.0          18.6               10.0 +/-    1.59      22.8 +/-    1.59  0.050 / 0.060
G27     314.9          24.3                6.8 +/-    1.96      13.5 +/-    1.96  0.220 / 0.170
G29     167.8          23.4               10.7 +/-    0.77      21.6 +/-    0.77  0.150 / 0.130
G32     205.3          15.9               13.4 +/-    2.20      32.5 +/-    2.20  0.090 / 0.050