PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-13:43:10
G03     316.6          41.9                7.5 +/-    0.71      10.6 +/-    0.71  0.040 / 0.070
G11     243.5          15.3                8.5 +/-    0.96      20.9 +/-    0.96  0.040 / 0.070
G14     51.7           46.7                7.5 +/-    1.44       9.9 +/-    1.44  0.190 / 0.180
G18     225.9          31.9                9.4 +/-    1.71      15.9 +/-    1.71  0.130 / 0.120
G22     308.4          66.2                9.4 +/-    0.53      10.2 +/-    0.53  0.140 / 0.360
G25     44.3           13.4                6.4 +/-    3.77      16.5 +/-    3.77  0.150 / 0.400
G26     138.8          34.3              -21.2 +/-   31.08     -34.1 +/-   31.08  0.030 / 0.040
G31     43.0           61.8                7.7 +/-    0.55       8.6 +/-    0.55  0.030 / 0.040
G32     73.7           24.8                8.5 +/-    1.62      16.7 +/-    1.62  0.070 / 0.070