PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-19:57:50
G03     203.8          51.2               13.6 +/-    0.98      16.9 +/-    0.98  0.070 / 0.080
G07     261.1          18.2               12.5 +/-    0.70      28.8 +/-    0.70  0.080 / 0.090
G09     312.5          31.5               11.3 +/-    1.12      19.1 +/-    1.12  0.040 / 0.030
G16     82.8           64.5               13.8 +/-    0.74      15.1 +/-    0.74  0.030 / 0.030
G22     185.6          35.4               13.8 +/-    0.96      21.7 +/-    0.96  0.220 / 0.290
G23     337.5          65.7               12.9 +/-    0.98      14.0 +/-    0.98  0.210 / 0.280
G26     49.4           38.7               11.6 +/-    1.24      17.2 +/-    1.24  0.030 / 0.050
G27     129.3          14.6               15.1 +/-    3.47      37.9 +/-    3.47  0.040 / 0.040