PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-17:12:40
G08     321.2          10.3              -17.4 +/-   19.73     -48.2 +/-   19.73  0.060 / 0.100
G10     302.8          53.2                9.8 +/-    0.93      11.9 +/-    0.93  0.050 / 0.070
G14     211.5          15.9               12.5 +/-    2.43      30.4 +/-    2.43  0.030 / 0.050
G15     45.5           23.3                7.9 +/-    0.75      16.1 +/-    0.75  0.030 / 0.040
G18     11.8           64.6                8.3 +/-    0.80       9.0 +/-    0.80  0.060 / 0.130
G20     73.5           17.5                9.3 +/-    1.32      21.7 +/-    1.32  0.070 / 0.120
G21     113.4          65.8               12.5 +/-    0.30      13.5 +/-    0.30  0.110 / 0.220
G24     94.3           28.1               11.8 +/-    0.77      21.6 +/-    0.77  0.080 / 0.260
G27     294.3          36.5               10.7 +/-    1.08      16.5 +/-    1.08  0.080 / 0.100
G32     212.9          35.2               13.6 +/-    1.19      21.5 +/-    1.19  0.070 / 0.080