PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-06:12:40
G01     119.3          17.8                7.4 +/-    1.76      17.2 +/-    1.76  0.070 / 0.050
G07     81.2           65.8                4.6 +/-    0.57       5.0 +/-    0.57  0.050 / 0.040
G08     44.9           30.9                2.4 +/-    1.15       4.2 +/-    1.15  0.020 / 0.020
G09     177.0          26.3                5.2 +/-    1.37       9.9 +/-    1.37  0.030 / 0.020
G11     106.9          39.0                7.0 +/-    0.70      10.4 +/-    0.70  0.170 / 0.190
G13     318.5          17.8                3.0 +/-    1.47       7.1 +/-    1.47  0.150 / 0.090
G17     201.2          25.8                6.8 +/-    1.69      13.0 +/-    1.69  0.130 / 0.060
G28     293.5          57.6                3.5 +/-    1.28       4.0 +/-    1.28  0.070 / 0.080
G30     348.0          68.7                3.6 +/-    0.75       3.9 +/-    0.75  0.130 / 0.170