PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/11-18:27:30
G03     248.8          70.6               13.1 +/-    0.69      13.8 +/-    0.69  0.040 / 0.040
G09     300.3          14.6                9.4 +/-    1.31      23.7 +/-    1.31  0.040 / 0.050
G14     95.8           16.7               13.5 +/-    1.99      32.1 +/-    1.99  0.140 / 0.240
G16     141.0          53.1               14.7 +/-    0.32      17.9 +/-    0.32  0.130 / 0.220
G22     197.1          59.5               14.4 +/-    0.49      16.4 +/-    0.49  0.040 / 0.040
G23     314.2          43.7               12.1 +/-    0.53      16.6 +/-    0.53  0.030 / 0.030
G26     86.4           56.8               13.2 +/-    0.83      15.4 +/-    0.83  0.110 / 0.240
G31     48.8           26.9                9.6 +/-    1.62      18.0 +/-    1.62  0.090 / 0.320