PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-21:12:30
G10     292.2          50.9               12.9 +/-    0.64      16.1 +/-    0.64  0.060 / 0.120
G15     47.2           32.8                9.1 +/-    0.52      15.1 +/-    0.52  0.050 / 0.100
G20     343.6          65.3               10.7 +/-    0.68      11.6 +/-    0.68  0.040 / 0.040
G21     75.4           76.7               13.8 +/-    0.93      14.1 +/-    0.93  0.040 / 0.040
G24     104.2          24.7               11.5 +/-    1.13      22.7 +/-    1.13  0.050 / 0.090
G27     305.7          32.0               12.1 +/-    1.88      20.4 +/-    1.88  0.050 / 0.070
G29     168.0          12.3               16.4 +/-    3.16      43.6 +/-    3.16  0.070 / 0.180
G32     208.3          27.6               15.2 +/-    2.97      28.0 +/-    2.97  0.070 / 0.170