PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-19:42:30
G03     234.7          68.6                8.6 +/-    0.42       9.2 +/-    0.42  0.040 / 0.050
G09     302.4          16.2                7.0 +/-    1.75      16.9 +/-    1.75  0.040 / 0.050
G14     98.5           16.2                8.8 +/-    2.23      21.2 +/-    2.23  0.220 / 0.230
G16     131.0          58.0               11.4 +/-    0.41      13.1 +/-    0.41  0.180 / 0.230
G22     194.5          56.2                9.3 +/-    0.53      10.9 +/-    0.53  0.110 / 0.250
G23     319.1          49.0                8.1 +/-    0.76      10.4 +/-    0.76  0.100 / 0.280
G26     70.8           52.1                8.0 +/-    0.72       9.8 +/-    0.72  0.030 / 0.040
G31     51.7           20.3                7.0 +/-    2.60      15.2 +/-    2.60  0.030 / 0.040