PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-06:27:50
G01     251.6          35.6                7.3 +/-    2.43      11.4 +/-    2.43  0.060 / 0.090
G03     316.0          40.6                4.2 +/-    1.64       6.1 +/-    1.64  0.060 / 0.090
G11     235.4          13.3                6.8 +/-    1.76      17.5 +/-    1.76  0.030 / 0.040
G14     61.0           39.7                2.1 +/-    2.19       3.1 +/-    2.19  0.040 / 0.030
G16     164.5          17.0                6.2 +/-    2.85      14.6 +/-    2.85  0.120 / 0.060
G22     305.7          65.9                5.3 +/-    0.96       5.8 +/-    0.96  0.070 / 0.090
G23     285.4          17.6                8.0 +/-    1.91      18.6 +/-    1.91  0.130 / 0.180
G26     139.0          36.6                6.6 +/-    0.94      10.2 +/-    0.94  0.090 / 0.140
G31     40.7           60.0                3.5 +/-    0.66       4.0 +/-    0.66  0.050 / 0.090
G32     76.1           24.5                4.3 +/-    1.43       8.6 +/-    1.43  0.050 / 0.080