PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-18:12:40
G02     230.9          69.5               17.8 +/-    4.80      18.8 +/-    4.80  0.120 / 0.270
G05     176.2          10.4               -3.2 +/-   30.15      -9.0 +/-   30.15  0.120 / 0.330
G06     42.2           61.9              -22.6 +/-   25.61     -25.3 +/-   25.61  0.060 / 0.110
G12     321.7          49.3                8.2 +/-    1.40      10.4 +/-    1.40  0.060 / 0.110
G17     69.9           22.0               16.0 +/-   12.00      33.5 +/-   12.00  0.030 / 0.070
G19     55.7           39.0              -41.7 +/-   52.94     -61.6 +/-   52.94  0.050 / 0.070
G24     251.3          37.0               10.7 +/-    0.94      16.4 +/-    0.94  0.110 / 0.310
G25     316.3          13.7                8.9 +/-    3.46      22.9 +/-    3.46  0.090 / 0.340