PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/09-10:42:40
G01     68.0           32.4                4.7 +/-    0.80       7.8 +/-    0.80  0.130 / 0.430
G07     138.6          27.2                6.3 +/-    1.24      11.8 +/-    1.24  0.100 / 0.330
G11     51.8           27.6                2.3 +/-    1.32       4.2 +/-    1.32  0.050 / 0.110
G13     273.8          36.6                6.7 +/-    1.87      10.3 +/-    1.87  0.050 / 0.110
G15     301.2          15.6                2.7 +/-    3.08       6.6 +/-    3.08  0.040 / 0.060
G17     240.4          73.5                5.9 +/-    0.52       6.1 +/-    0.52  0.040 / 0.050
G19     226.3          46.0                7.3 +/-    0.99       9.6 +/-    0.99  0.030 / 0.030
G28     24.6           58.4                3.7 +/-    0.42       4.3 +/-    0.42  0.040 / 0.040
G30     137.2          60.4                6.5 +/-    0.79       7.4 +/-    0.79  0.060 / 0.090