PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-07:57:40
G03     240.9          67.0                4.9 +/-    0.75       5.3 +/-    0.75  0.080 / 0.150
G09     305.6          22.4                4.0 +/-    2.02       8.2 +/-    2.02  0.070 / 0.120
G14     102.0          11.6                3.3 +/-    2.38       9.0 +/-    2.38  0.060 / 0.050
G16     126.8          60.4                6.8 +/-    0.49       7.7 +/-    0.49  0.060 / 0.050
G22     193.1          53.7                5.5 +/-    0.60       6.7 +/-    0.60  0.060 / 0.050
G23     319.5          49.1                3.3 +/-    1.29       4.2 +/-    1.29  0.040 / 0.050
G26     68.7           52.4                5.9 +/-    0.62       7.3 +/-    0.62  0.030 / 0.040
G31     52.8           19.0                2.7 +/-    2.87       6.2 +/-    2.87  0.030 / 0.040