PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/08-08:28:00
G01     74.8           33.2                7.7 +/-    0.63      12.6 +/-    0.63  0.050 / 0.060
G07     135.3          33.0                9.7 +/-    0.60      16.0 +/-    0.60  0.040 / 0.060
G11     56.2           32.2                6.4 +/-    0.62      10.7 +/-    0.62  0.030 / 0.040
G13     280.8          37.1                8.9 +/-    1.17      13.6 +/-    1.17  0.030 / 0.040
G15     305.6          14.7                4.2 +/-    2.36      10.7 +/-    2.36  0.100 / 0.350
G17     228.5          67.9               10.3 +/-    0.92      11.1 +/-    0.92  0.090 / 0.300
G19     221.8          40.5                9.6 +/-    1.37      13.9 +/-    1.37  0.050 / 0.090
G28     14.6           59.8                6.7 +/-    0.70       7.6 +/-    0.70  0.040 / 0.080
G30     130.7          64.9                9.3 +/-    0.52      10.2 +/-    0.52  0.160 / 0.280