PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/10-19:57:50
G10     251.5          29.2               12.4 +/-    1.92      22.1 +/-    1.92  0.150 / 0.400
G13     52.0           28.1                7.3 +/-    3.05      13.3 +/-    3.05  0.140 / 0.430
G15     86.1           58.1               11.2 +/-    0.68      13.0 +/-    0.68  0.040 / 0.050
G16     294.3          15.8                7.6 +/-    2.21      18.6 +/-    2.21  0.040 / 0.050
G20     272.4          52.3               11.9 +/-    2.54      14.6 +/-    2.54  0.060 / 0.200
G21     334.6          60.1               10.7 +/-    0.68      12.2 +/-    0.68  0.090 / 0.220
G26     267.1          15.1                9.7 +/-    2.09      24.0 +/-    2.09  0.040 / 0.040
G29     164.0          49.4               12.2 +/-    0.67      15.5 +/-    0.67  0.030 / 0.040