PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/16-16:43:00
G01     250.2          35.5               11.2 +/-    2.10      17.7 +/-    2.10  0.060 / 0.080
G03     316.1          46.2                8.6 +/-    1.27      11.4 +/-    1.27  0.060 / 0.080
G11     235.7          11.3               10.8 +/-    2.29      29.3 +/-    2.29  0.040 / 0.080
G14     61.1           39.8                7.9 +/-    1.32      11.5 +/-    1.32  0.050 / 0.080
G18     216.7          25.8                9.8 +/-    3.39      18.8 +/-    3.39  0.080 / 0.130
G22     302.6          68.4                9.1 +/-    0.88       9.7 +/-    0.88  0.090 / 0.150
G23     286.3          18.4                8.8 +/-    1.23      20.1 +/-    1.23  0.100 / 0.260
G26     143.1          36.1               11.2 +/-    1.31      17.4 +/-    1.31  0.110 / 0.210
G31     40.7           61.9                8.3 +/-    1.39       9.3 +/-    1.39  0.300 / 0.430
G32     75.9           25.3                8.7 +/-    1.45      16.8 +/-    1.45  0.230 / 0.440