PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-04:27:50
G01     250.3          35.0                8.1 +/-    2.21      12.9 +/-    2.21  0.100 / 0.170
G03     315.9          41.9                6.6 +/-    0.65       9.3 +/-    0.65  0.090 / 0.210
G11     235.0          12.6                6.4 +/-    2.59      17.0 +/-    2.59  0.030 / 0.030
G14     62.1           39.1                4.6 +/-    1.78       6.8 +/-    1.78  0.040 / 0.030
G16     164.9          17.3                6.1 +/-    1.99      14.4 +/-    1.99  0.060 / 0.070
G22     304.6          66.1                6.9 +/-    0.60       7.5 +/-    0.60  0.100 / 0.070
G23     286.3          18.2                7.1 +/-    1.32      16.4 +/-    1.32  0.030 / 0.030
G26     139.5          37.2                6.9 +/-    0.73      10.5 +/-    0.73  0.030 / 0.030
G31     40.1           60.2                4.7 +/-    0.48       5.4 +/-    0.48  0.190 / 0.320
G32     76.6           24.8                6.1 +/-    1.52      12.0 +/-    1.52  0.110 / 0.200