PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-20:58:00
G10     273.6          43.1               10.1 +/-    1.32      13.9 +/-    1.32  0.040 / 0.040
G13     39.3           13.0                7.8 +/-    2.84      20.5 +/-    2.84  0.040 / 0.040
G15     54.7           45.5                9.9 +/-    1.05      13.3 +/-    1.05  0.150 / 0.450
G16     273.7          10.7                9.4 +/-    1.73      25.8 +/-    1.73  0.100 / 0.210
G20     310.3          62.7                9.9 +/-    0.42      11.0 +/-    0.42  0.070 / 0.040
G21     15.5           74.3               10.7 +/-    0.46      11.1 +/-    0.46  0.030 / 0.050
G24     117.4          17.2               12.0 +/-    1.23      28.2 +/-    1.23  0.120 / 0.350
G27     316.3          22.6                8.8 +/-    1.18      18.1 +/-    1.18  0.160 / 0.410
G29     167.8          26.2               11.1 +/-    1.63      21.2 +/-    1.63  0.250 / 0.390
G32     204.8          14.0               12.6 +/-    2.58      32.0 +/-    2.58  0.330 / 0.390