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                9.8 +/-    1.29      16.1 +/-    1.29  0.040 / 0.040
G03     314.5          50.7                8.1 +/-    0.94      10.2 +/-    0.94  0.030 / 0.050
G11     236.5          10.6               11.0 +/-    3.38      30.2 +/-    3.38  0.050 / 0.060
G14     63.5           39.5                8.8 +/-    0.62      12.9 +/-    0.62  0.050 / 0.060
G16     161.7          21.7               11.8 +/-    1.58      24.9 +/-    1.58  0.080 / 0.260
G22     296.5          70.9                7.7 +/-    0.89       8.1 +/-    0.89  0.070 / 0.210
G23     290.3          22.9                9.5 +/-    1.48      19.6 +/-    1.48  0.050 / 0.110
G26     131.8          41.5               11.6 +/-    0.57      16.5 +/-    0.57  0.050 / 0.120
G31     40.4           53.7                7.1 +/-    0.42       8.6 +/-    0.42  0.080 / 0.110
G32     81.1           19.8                9.1 +/-    1.29      20.2 +/-    1.29  0.100 / 0.110