PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-15:27:40
G02     202.8          28.9               15.4 +/-    1.40      27.6 +/-    1.40  0.070 / 0.130
G06     165.0          64.9               15.4 +/-    0.96      16.8 +/-    0.96  0.050 / 0.090
G12     305.9          12.7               10.5 +/-    1.78      27.6 +/-    1.78  0.120 / 0.260
G17     35.4           49.8               12.2 +/-    0.49      15.5 +/-    0.49  0.110 / 0.220
G19     358.8          66.5               12.9 +/-    0.38      14.0 +/-    0.38  0.070 / 0.130
G24     303.4          34.9               12.4 +/-    1.15      19.7 +/-    1.15  0.070 / 0.150
G28     99.4           33.2               11.3 +/-    0.69      18.5 +/-    0.69  0.030 / 0.030