PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-18:57:30
G02     301.2          80.7               11.7 +/-    0.73      11.9 +/-    0.73  0.060 / 0.120
G05     166.8          28.2               19.4 +/-    1.10      35.3 +/-    1.10  0.090 / 0.140
G06     40.9           43.4                9.9 +/-    0.55      13.7 +/-    0.55  0.030 / 0.050
G12     317.5          69.8               10.3 +/-    1.27      11.0 +/-    1.27  0.030 / 0.030
G17     81.9           14.2               10.8 +/-    1.79      27.3 +/-    1.79  0.040 / 0.040
G19     68.1           33.1               12.0 +/-    0.62      19.7 +/-    0.62  0.030 / 0.040
G24     231.3          26.1               17.5 +/-    1.58      33.3 +/-    1.58  0.090 / 0.190
G25     317.7          24.4                9.9 +/-    2.27      19.7 +/-    2.27  0.100 / 0.220