PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/22-08:28:00
G01     48.0           23.8                4.9 +/-    1.81       9.8 +/-    1.81  0.050 / 0.060
G06     180.0          24.8                6.4 +/-    2.46      12.5 +/-    2.46  0.050 / 0.060
G11     44.1           12.5                2.8 +/-    1.82       7.5 +/-    1.82  0.150 / 0.370
G13     249.4          28.8                7.6 +/-    2.09      13.7 +/-    2.09  0.140 / 0.420
G15     280.8          15.5                4.5 +/-    2.01      11.2 +/-    2.01  0.020 / 0.020
G17     335.2          77.3                7.5 +/-    0.32       7.7 +/-    0.32  0.020 / 0.020
G19     253.2          63.7                8.0 +/-    0.57       8.8 +/-    0.57  0.130 / 0.130
G28     57.4           51.3                6.7 +/-    0.77       8.3 +/-    0.77  0.140 / 0.150
G30     150.5          37.9               10.2 +/-    1.30      15.3 +/-    1.30  0.070 / 0.080