PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/21-16:58:00
G03     231.1          68.8               10.2 +/-    0.58      10.9 +/-    0.58  0.110 / 0.310
G09     302.0          15.9                5.8 +/-    1.86      14.0 +/-    1.86  0.160 / 0.290
G14     97.5           17.8                8.6 +/-    1.24      20.0 +/-    1.24  0.120 / 0.360
G16     129.2          57.9               10.0 +/-    0.75      11.6 +/-    0.75  0.170 / 0.380
G22     192.0          55.3                9.8 +/-    0.63      11.6 +/-    0.63  0.050 / 0.040
G23     320.1          50.1                9.5 +/-    0.55      11.9 +/-    0.55  0.070 / 0.060
G26     70.5           51.6                9.2 +/-    0.36      11.4 +/-    0.36  0.060 / 0.070
G31     51.7           19.7                8.4 +/-    2.16      18.5 +/-    2.16  0.100 / 0.100