PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-20:13:00
G10     273.7          43.2               10.3 +/-    1.00      14.3 +/-    1.00  0.110 / 0.150
G13     39.3           13.0                7.8 +/-    1.47      20.4 +/-    1.47  0.110 / 0.130
G15     54.2           44.7                9.4 +/-    0.58      12.7 +/-    0.58  0.050 / 0.050
G16     273.6          10.7                8.9 +/-    4.67      24.3 +/-    4.67  0.040 / 0.040
G20     311.0          62.9               10.2 +/-    1.02      11.3 +/-    1.02  0.100 / 0.260
G21     15.8           74.4               12.7 +/-    0.55      13.1 +/-    0.55  0.140 / 0.280
G24     117.5          17.2               11.6 +/-    1.86      27.4 +/-    1.86  0.120 / 0.630
G27     316.3          22.7                7.0 +/-    1.20      14.4 +/-    1.20  0.110 / 0.680
G29     167.8          26.3               13.3 +/-    0.77      25.3 +/-    0.77  0.030 / 0.060
G32     204.7          14.3               14.5 +/-    1.47      36.7 +/-    1.47  0.040 / 0.060