PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/29-16:27:40
G02     258.4          77.4                7.9 +/-    0.79       8.1 +/-    0.79  0.070 / 0.170
G05     170.0          21.3                9.4 +/-    1.45      20.1 +/-    1.45  0.080 / 0.160
G06     40.4           49.5                6.9 +/-    0.48       8.8 +/-    0.48  0.070 / 0.170
G12     322.1          64.2                7.2 +/-    1.10       7.9 +/-    1.10  0.070 / 0.180
G17     77.1           16.8                7.6 +/-    0.69      18.0 +/-    0.69  0.030 / 0.040
G19     60.7           37.8                7.6 +/-    0.84      11.5 +/-    0.84  0.040 / 0.050
G24     236.6          30.6                9.7 +/-    0.97      16.8 +/-    0.97  0.030 / 0.050
G25     317.5          18.9                7.7 +/-    1.31      17.5 +/-    1.31  0.030 / 0.040