PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-21:12:30
G01     320.6          12.2                0.4 +/-   28.08       1.1 +/-   28.08  0.140 / 0.150
G08     263.0          16.4               11.7 +/-    1.42      28.1 +/-    1.42  0.270 / 0.200
G10     67.4           57.3                9.2 +/-    1.26      10.7 +/-    1.26  0.150 / 0.250
G11     308.7          19.7                9.4 +/-    0.83      20.7 +/-    0.83  0.160 / 0.260
G14     278.3          68.8               11.0 +/-    0.66      11.7 +/-    0.66  0.060 / 0.090
G18     96.2           32.7               10.1 +/-    0.93      16.8 +/-    0.93  0.060 / 0.080
G27     227.7          12.8               10.5 +/-    1.92      27.4 +/-    1.92  0.020 / 0.020
G31     180.0          31.9               14.3 +/-    1.15      24.2 +/-    1.15  0.030 / 0.020
G32     344.8          72.6               10.4 +/-    0.28      10.8 +/-    0.28  0.040 / 0.040