PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/17-02:12:30
G02     358.5          76.1                6.4 +/-    0.44       6.6 +/-    0.44  0.030 / 0.010
G05     161.6          37.1                9.6 +/-    1.32      14.7 +/-    1.32  0.030 / 0.010
G06     42.3           38.0                6.5 +/-    0.70       9.8 +/-    0.70  0.050 / 0.020
G12     306.8          73.2                9.1 +/-    0.38       9.5 +/-    0.38  0.050 / 0.030
G17     86.5           13.8                7.5 +/-    3.06      19.2 +/-    3.06  0.070 / 0.030
G19     77.1           26.4                6.8 +/-    1.44      12.9 +/-    1.44  0.060 / 0.020
G24     226.6          21.0               10.9 +/-    1.11      23.4 +/-    1.11  0.110 / 0.070
G25     316.9          30.3                7.0 +/-    1.14      12.1 +/-    1.14  0.130 / 0.050