PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/25-07:42:50
G01     124.6          12.1                4.8 +/-    2.23      12.7 +/-    2.23  0.040 / 0.030
G07     60.3           68.6                6.1 +/-    0.81       6.5 +/-    0.81  0.030 / 0.040
G08     50.9           40.7                4.8 +/-    1.05       6.9 +/-    1.05  0.020 / 0.040
G09     176.9          34.3                6.7 +/-    1.06      10.8 +/-    1.06  0.020 / 0.030
G11     119.2          36.8                7.8 +/-    1.30      11.9 +/-    1.30  0.090 / 0.290
G13     320.3          13.7                0.8 +/-    1.27       2.1 +/-    1.27  0.080 / 0.320
G17     200.0          14.0                2.3 +/-    2.29       5.8 +/-    2.29  0.090 / 0.310
G18     102.0          17.2                5.6 +/-    1.66      13.2 +/-    1.66  0.110 / 0.370
G28     270.0          47.6                7.8 +/-    1.12      10.2 +/-    1.12  0.110 / 0.340
G30     331.2          60.0                5.7 +/-    0.70       6.5 +/-    0.70  0.110 / 0.390