PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-19:13:00
G01     246.1          32.6                9.8 +/-    0.84      16.3 +/-    0.84  0.050 / 0.030
G03     314.4          50.2               10.2 +/-    1.06      12.9 +/-    1.06  0.040 / 0.040
G14     64.5           38.7                9.5 +/-    0.96      14.2 +/-    0.96  0.050 / 0.080
G16     162.0          21.8               12.4 +/-    2.25      26.0 +/-    2.25  0.050 / 0.090
G22     296.2          70.7               10.2 +/-    0.49      10.7 +/-    0.49  0.150 / 0.290
G23     290.4          22.7               10.1 +/-    2.26      20.9 +/-    2.26  0.090 / 0.210
G26     131.9          41.8               13.0 +/-    0.69      18.4 +/-    0.69  0.040 / 0.050
G31     40.2           53.8                9.8 +/-    0.58      11.9 +/-    0.58  0.040 / 0.040
G32     81.5           19.8                9.3 +/-    1.69      20.7 +/-    1.69  0.110 / 0.120