PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-20:27:50
G01     264.4          40.2                9.1 +/-    1.88      13.2 +/-    1.88  0.070 / 0.080
G03     316.4          33.4                5.9 +/-    1.15       9.7 +/-    1.15  0.080 / 0.090
G10     132.2          12.5               10.1 +/-    3.45      26.7 +/-    3.45  0.100 / 0.240
G11     244.8          17.4                9.3 +/-    2.23      21.8 +/-    2.23  0.080 / 0.220
G14     49.1           46.8                6.5 +/-    1.10       8.5 +/-    1.10  0.040 / 0.090
G18     225.7          34.9                8.9 +/-    2.07      14.1 +/-    2.07  0.040 / 0.070
G22     312.8          55.7                5.7 +/-    0.76       6.7 +/-    0.76  0.130 / 0.390
G25     43.9           11.5                7.2 +/-    2.15      19.4 +/-    2.15  0.190 / 0.630
G31     50.2           73.9                7.9 +/-    0.51       8.2 +/-    0.51  0.060 / 0.060
G32     67.4           30.4                7.7 +/-    0.92      13.4 +/-    0.92  0.060 / 0.070