PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-16:57:50
G08     319.9          11.7                4.9 +/-    4.29      13.1 +/-    4.29  0.050 / 0.080
G10     306.7          54.4               11.0 +/-    1.06      13.2 +/-    1.06  0.070 / 0.090
G14     212.3          18.0               13.5 +/-    0.87      31.1 +/-    0.87  0.040 / 0.050
G15     45.4           21.1                7.1 +/-    0.65      15.2 +/-    0.65  0.030 / 0.050
G18     17.1           63.8               10.2 +/-    0.58      11.3 +/-    0.58  0.110 / 0.530
G20     75.2           16.2                9.1 +/-    1.59      22.1 +/-    1.59  0.110 / 0.390
G21     117.6          63.9               13.0 +/-    0.77      14.3 +/-    0.77  0.060 / 0.140
G24     91.5           28.8               10.5 +/-    0.60      18.8 +/-    0.60  0.070 / 0.130
G27     291.3          37.1               12.1 +/-    0.86      18.5 +/-    0.86  0.080 / 0.360
G32     214.1          37.8               14.6 +/-    1.37      22.0 +/-    1.37  0.150 / 0.500