PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-19:13:10
G01     221.6          12.2               10.8 +/-    2.13      28.6 +/-    2.13  0.090 / 0.120
G03     258.2          71.2                9.8 +/-    1.26      10.2 +/-    1.26  0.070 / 0.110
G09     297.9          11.0               -7.1 +/-   34.43     -19.5 +/-   34.43  0.040 / 0.040
G14     92.2           21.1                9.9 +/-    1.81      21.2 +/-    1.81  0.040 / 0.040
G16     141.2          51.5               12.5 +/-    1.37      15.5 +/-    1.37  0.050 / 0.060
G22     201.2          63.8               12.2 +/-    0.75      13.4 +/-    0.75  0.050 / 0.070
G23     313.3          43.3               10.6 +/-    1.01      14.6 +/-    1.01  0.120 / 0.260
G26     83.7           54.2                9.1 +/-    0.49      10.9 +/-    0.49  0.100 / 0.250
G31     48.1           26.1                8.8 +/-    0.71      16.8 +/-    0.71  0.050 / 0.040