PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-20:42:30
G10     291.3          50.6               12.1 +/-    0.59      15.1 +/-    0.59  0.060 / 0.110
G15     47.3           32.9                8.1 +/-    0.69      13.4 +/-    0.69  0.060 / 0.120
G20     342.6          65.3                9.6 +/-    0.80      10.5 +/-    0.80  0.040 / 0.040
G21     72.9           76.9               12.9 +/-    0.55      13.2 +/-    0.55  0.040 / 0.050
G24     104.9          24.4               10.4 +/-    0.74      20.7 +/-    0.74  0.050 / 0.080
G27     306.3          31.7               10.5 +/-    1.45      17.7 +/-    1.45  0.050 / 0.080
G29     168.1          13.0               13.8 +/-    3.93      35.9 +/-    3.93  0.080 / 0.130
G32     208.0          27.2               10.8 +/-    2.02      20.2 +/-    2.02  0.100 / 0.120