PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-19:43:10
G10     250.8          28.6               11.3 +/-    1.77      20.4 +/-    1.77  0.050 / 0.050
G13     52.7           28.5                9.3 +/-    1.76      16.9 +/-    1.76  0.040 / 0.050
G15     86.5           57.8               10.9 +/-    0.56      12.6 +/-    0.56  0.100 / 0.170
G16     295.0          15.8                7.7 +/-    1.89      18.8 +/-    1.89  0.090 / 0.160
G20     271.4          51.8               11.5 +/-    3.08      14.2 +/-    3.08  0.030 / 0.040
G21     333.7          59.6               10.5 +/-    0.76      12.0 +/-    0.76  0.050 / 0.040
G26     267.8          15.4                8.3 +/-    2.51      20.6 +/-    2.51  0.260 / 0.330
G29     163.7          50.4               12.1 +/-    0.42      15.1 +/-    0.42  0.130 / 0.420