PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/20-22:12:50
G01     320.6          13.4              -16.8 +/-   30.58     -43.4 +/-   30.58  0.260 / 0.340
G08     260.4          15.9               11.4 +/-    2.95      27.9 +/-    2.95  0.160 / 0.390
G10     71.3           55.6               11.7 +/-    0.86      13.9 +/-    0.86  0.130 / 0.140
G11     306.8          21.1               10.5 +/-    4.38      22.6 +/-    4.38  0.130 / 0.260
G14     280.3          69.0               13.1 +/-    0.50      13.9 +/-    0.50  0.060 / 0.060
G18     308.2          37.8               12.3 +/-    2.07      18.5 +/-    2.07  0.040 / 0.060
G20     100.6          32.9               13.5 +/-    1.13      22.3 +/-    1.13  0.130 / 0.320
G27     229.2          12.7               13.1 +/-    8.66      34.5 +/-    8.66  0.130 / 0.370
G31     177.8          35.5               14.8 +/-    1.45      23.4 +/-    1.45  0.100 / 0.270
G32     356.9          70.9               12.5 +/-    0.92      13.2 +/-    0.92  0.080 / 0.280