PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-18:42:50
G01     320.6          12.6                7.3 +/-    9.81      19.1 +/-    9.81  0.270 / 0.220
G08     263.5          16.1               11.6 +/-    2.41      28.0 +/-    2.41  0.170 / 0.370
G10     68.6           57.0               12.4 +/-    0.45      14.5 +/-    0.45  0.050 / 0.080
G11     309.0          19.2                9.7 +/-    0.97      21.8 +/-    0.97  0.050 / 0.080
G14     278.4          68.5               13.1 +/-    0.53      14.0 +/-    0.53  0.030 / 0.040
G18     97.1           31.7               11.2 +/-    1.57      18.9 +/-    1.57  0.030 / 0.030
G27     227.4          12.4               10.5 +/-    3.92      27.9 +/-    3.92  0.020 / 0.030
G31     178.5          34.0               12.7 +/-    0.54      20.5 +/-    0.54  0.020 / 0.020
G32     350.7          71.9               13.0 +/-    0.71      13.6 +/-    0.71  0.220 / 0.370