PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/20-22:13:00
G08     294.4          22.2                8.6 +/-    1.28      17.9 +/-    1.28  0.050 / 0.100
G10     15.0           62.6               10.3 +/-    0.60      11.4 +/-    0.60  0.050 / 0.100
G14     230.2          45.2               11.0 +/-    2.06      14.7 +/-    2.06  0.110 / 0.140
G18     318.0          11.5                1.1 +/-   25.45       2.9 +/-   25.45  0.090 / 0.160
G20     68.9           50.4                9.2 +/-    0.88      11.6 +/-    0.88  0.290 / 0.440
G21     147.8          39.7               10.0 +/-    0.62      14.6 +/-    0.62  0.250 / 0.410
G24     55.8           25.7                8.5 +/-    2.03      16.4 +/-    2.03  0.090 / 0.200
G27     252.8          31.3                9.9 +/-    2.74      16.8 +/-    2.74  0.090 / 0.170
G32     248.9          69.7                9.2 +/-    0.30       9.7 +/-    0.30  0.080 / 0.090