PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-05:28:10
G03     237.6          66.5                5.4 +/-    0.60       5.8 +/-    0.60  0.090 / 0.290
G07     250.0          10.5               -6.4 +/-   16.41     -17.5 +/-   16.41  0.090 / 0.350
G09     305.8          22.4                2.8 +/-    3.22       5.8 +/-    3.22  0.060 / 0.050
G14     102.7          11.2                2.8 +/-    1.75       7.7 +/-    1.75  0.060 / 0.060
G16     128.4          60.8                8.1 +/-    0.64       9.2 +/-    0.64  0.060 / 0.170
G22     193.8          53.2                5.8 +/-    0.83       7.1 +/-    0.83  0.080 / 0.140
G23     320.1          49.8                4.2 +/-    0.76       5.3 +/-    0.76  0.090 / 0.490
G26     69.0           53.1                4.8 +/-    0.55       5.8 +/-    0.55  0.100 / 0.590
G31     52.8           19.8                1.7 +/-    0.85       3.8 +/-    0.85  0.080 / 0.210