PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-08:57:40
G03     204.5          45.6                1.0 +/-    5.58       1.4 +/-    5.58  0.070 / 0.160
G07     269.7          26.3                6.5 +/-    1.95      12.4 +/-    1.95  0.100 / 0.130
G08     154.3          10.3              -12.6 +/-   31.49     -34.8 +/-   31.49  0.070 / 0.160
G09     317.8          43.2               11.1 +/-    6.53      15.3 +/-    6.53  0.090 / 0.150
G16     64.3           61.2                6.7 +/-    0.20       7.6 +/-    0.20  0.030 / 0.050
G22     183.6          27.7                5.7 +/-    1.98      10.5 +/-    1.98  0.030 / 0.040
G23     343.4          71.0                5.3 +/-    0.48       5.6 +/-    0.48  0.040 / 0.050
G26     45.9           33.8              -61.6 +/-   68.08    -100.0 +/-   68.08  0.030 / 0.050
G27     121.7          20.5                5.9 +/-    1.56      12.8 +/-    1.56  0.060 / 0.110