PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-19:13:00
G01     320.4          13.1                7.6 +/-    2.46      19.8 +/-    2.46  0.150 / 0.430
G08     262.7          15.8               15.4 +/-    1.70      37.7 +/-    1.70  0.180 / 0.410
G10     69.7           56.7                9.6 +/-    0.54      11.3 +/-    0.54  0.060 / 0.090
G11     308.4          19.7                9.8 +/-    1.35      21.7 +/-    1.35  0.050 / 0.090
G14     280.4          68.8               11.9 +/-    0.72      12.7 +/-    0.72  0.030 / 0.040
G18     97.6           31.4                8.3 +/-    1.43      14.1 +/-    1.43  0.040 / 0.040
G27     226.9          12.0               17.2 +/-    3.06      45.9 +/-    3.06  0.020 / 0.020
G31     178.7          34.4               15.7 +/-    0.77      25.1 +/-    0.77  0.020 / 0.030
G32     351.7          71.6               10.4 +/-    0.76      10.8 +/-    0.76  0.030 / 0.020