PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-04:27:50
G03     211.5          54.4                7.3 +/-    1.60       8.8 +/-    1.60  0.040 / 0.090
G07     261.3          19.5                7.2 +/-    0.74      15.9 +/-    0.74  0.080 / 0.080
G09     313.1          33.3                3.8 +/-    1.81       6.3 +/-    1.81  0.040 / 0.050
G16     93.0           66.9                7.7 +/-    0.32       8.3 +/-    0.32  0.040 / 0.050
G22     187.6          37.9                6.6 +/-    1.53       9.9 +/-    1.53  0.090 / 0.170
G23     332.6          62.5                4.8 +/-    0.82       5.3 +/-    0.82  0.050 / 0.170
G26     52.4           44.2                5.3 +/-    0.75       7.2 +/-    0.75  0.110 / 0.320
G27     129.2          14.3                6.7 +/-    1.88      17.0 +/-    1.88  0.080 / 0.320
G31     60.9           10.5                2.2 +/-    4.23       6.1 +/-    4.23  0.110 / 0.260