PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-19:28:10
G01     320.5          13.0               10.0 +/-    1.31      26.0 +/-    1.31  0.130 / 0.490
G08     262.8          15.9               11.1 +/-    1.29      26.9 +/-    1.29  0.110 / 0.310
G10     69.4           56.8                8.6 +/-    0.93      10.1 +/-    0.93  0.130 / 0.230
G11     308.4          19.7               11.6 +/-    1.79      25.6 +/-    1.79  0.130 / 0.220
G14     280.1          68.8               11.5 +/-    0.49      12.3 +/-    0.49  0.050 / 0.090
G18     97.4           31.5               10.3 +/-    0.78      17.5 +/-    0.78  0.050 / 0.090
G27     227.0          12.1               12.0 +/-    4.45      32.0 +/-    4.45  0.040 / 0.050
G31     178.8          34.1               12.2 +/-    2.36      19.6 +/-    2.36  0.040 / 0.040
G32     350.9          71.7               10.4 +/-    0.28      10.9 +/-    0.28  0.030 / 0.030