PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-17:58:00
G01     246.8          33.0                9.9 +/-    1.55      16.4 +/-    1.55  0.050 / 0.030
G03     314.5          50.7                9.0 +/-    1.10      11.2 +/-    1.10  0.040 / 0.040
G14     63.5           39.5                9.1 +/-    0.86      13.4 +/-    0.86  0.130 / 0.290
G16     161.7          21.7                9.6 +/-    7.22      20.2 +/-    7.22  0.110 / 0.300
G22     296.5          70.9                9.4 +/-    0.37       9.9 +/-    0.37  0.050 / 0.090
G23     290.3          22.9                9.5 +/-    1.91      19.5 +/-    1.91  0.050 / 0.090
G26     131.8          41.5               11.4 +/-    0.90      16.1 +/-    0.90  0.100 / 0.080
G31     40.4           53.7                8.1 +/-    0.53       9.8 +/-    0.53  0.100 / 0.090
G32     81.1           19.8                9.0 +/-    1.33      19.9 +/-    1.33  0.040 / 0.030