PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-04:27:40
G01     294.0          39.3                3.9 +/-    1.64       5.7 +/-    1.64  0.050 / 0.090
G03     310.5          12.7                4.7 +/-    1.36      12.3 +/-    1.36  0.050 / 0.100
G10     117.3          31.9                6.0 +/-    0.33      10.2 +/-    0.33  0.050 / 0.080
G11     265.7          27.9                5.8 +/-    0.73      10.5 +/-    0.73  0.050 / 0.090
G14     22.8           59.3                4.0 +/-    0.67       4.6 +/-    0.67  0.050 / 0.090
G22     313.1          36.0                4.9 +/-    1.14       7.6 +/-    1.14  0.060 / 0.080
G25     65.7           17.5                3.5 +/-    0.68       8.1 +/-    0.68  0.060 / 0.130
G26     159.9          10.0              -20.1 +/-   15.48     -56.1 +/-   15.48  0.070 / 0.140
G31     147.4          76.8                4.9 +/-    0.77       5.0 +/-    0.77  0.040 / 0.050
G32     46.8           45.5                2.3 +/-    0.53       3.1 +/-    0.53  0.040 / 0.060