PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-19:57:40
G03     232.0          67.9                9.7 +/-    0.73      10.4 +/-    0.73  0.110 / 0.190
G09     303.1          17.1                7.8 +/-    1.48      18.4 +/-    1.48  0.100 / 0.180
G14     99.5           15.4               11.4 +/-    1.60      28.1 +/-    1.60  0.050 / 0.060
G16     129.2          59.0               12.9 +/-    0.66      14.7 +/-    0.66  0.040 / 0.050
G22     193.8          55.0               11.2 +/-    1.16      13.4 +/-    1.16  0.090 / 0.330
G23     320.0          49.8                8.4 +/-    0.70      10.6 +/-    0.70  0.090 / 0.290
G26     69.0           51.6               10.0 +/-    0.63      12.4 +/-    0.63  0.030 / 0.050
G31     52.2           19.4                7.7 +/-    0.54      17.3 +/-    0.54  0.030 / 0.050