PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-21:43:00
G02     67.5           27.1                8.4 +/-    0.72      15.6 +/-    0.72  0.030 / 0.040
G05     48.1           51.2                9.6 +/-    0.35      11.9 +/-    0.35  0.030 / 0.050
G12     180.2          18.9               12.3 +/-    2.48      27.9 +/-    2.48  0.070 / 0.250
G13     118.9          22.4               13.9 +/-    1.19      28.9 +/-    1.19  0.130 / 0.320
G15     160.1          19.7               12.3 +/-    1.48      27.2 +/-    1.48  0.060 / 0.120
G21     279.8          23.0               11.1 +/-    2.93      22.7 +/-    2.93  0.060 / 0.130
G25     222.8          43.1               11.0 +/-    2.03      15.2 +/-    2.03  0.050 / 0.070
G26     319.5          10.5              -17.5 +/-   30.13     -48.4 +/-   30.13  0.050 / 0.090
G29     334.3          64.1               10.9 +/-    0.62      12.0 +/-    0.62  0.080 / 0.220