PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-12:12:20
G01     220.2          11.7                5.0 +/-    1.75      13.4 +/-    1.75  0.040 / 0.040
G03     251.5          72.0                5.6 +/-    0.39       5.9 +/-    0.39  0.050 / 0.040
G09     298.0          11.3               -9.9 +/-   23.51     -26.9 +/-   23.51  0.120 / 0.260
G14     93.1           19.0                4.0 +/-    1.72       9.0 +/-    1.72  0.210 / 0.370
G16     142.3          50.8                6.8 +/-    0.45       8.5 +/-    0.45  0.050 / 0.040
G22     197.2          61.5                5.4 +/-    0.70       6.0 +/-    0.70  0.080 / 0.040
G23     313.8          43.9                4.3 +/-    0.65       5.9 +/-    0.65  0.170 / 0.270
G26     85.8           55.1                6.6 +/-    1.20       7.9 +/-    1.20  0.140 / 0.270
G31     48.6           25.7                3.3 +/-    3.32       6.3 +/-    3.32  0.110 / 0.200