PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-20:12:40
G01     307.8          32.5                7.2 +/-    1.50      12.0 +/-    1.50  0.070 / 0.140
G10     104.9          41.3                9.4 +/-    0.92      13.4 +/-    0.92  0.080 / 0.120
G11     283.7          28.1                7.6 +/-    1.00      13.9 +/-    1.00  0.050 / 0.030
G14     355.2          67.2                6.1 +/-    0.29       6.6 +/-    0.29  0.030 / 0.030
G18     117.1          13.5               10.8 +/-    1.55      27.9 +/-    1.55  0.090 / 0.130
G22     309.2          24.6                7.3 +/-    1.43      14.4 +/-    1.43  0.100 / 0.150
G25     82.8           16.3                9.4 +/-    1.13      22.6 +/-    1.13  0.060 / 0.040
G31     170.7          62.7               10.2 +/-    0.47      11.3 +/-    0.47  0.050 / 0.030
G32     34.1           53.8                6.7 +/-    1.30       8.1 +/-    1.30  0.030 / 0.030