PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-04:27:50
G01     307.5          32.8                3.3 +/-    1.13       5.4 +/-    1.13  0.040 / 0.030
G10     104.8          41.7                6.2 +/-    0.98       8.8 +/-    0.98  0.030 / 0.030
G11     280.4          29.6                4.4 +/-    0.99       7.7 +/-    0.99  0.060 / 0.070
G14     359.5          66.6                3.1 +/-    1.19       3.4 +/-    1.19  0.060 / 0.080
G18     116.3          16.1                6.3 +/-    2.00      15.3 +/-    2.00  0.040 / 0.050
G22     309.3          25.4                3.3 +/-    1.01       6.4 +/-    1.01  0.050 / 0.050
G25     78.6           15.7                5.3 +/-    2.45      13.0 +/-    2.45  0.130 / 0.100
G31     168.9          63.5                7.7 +/-    0.48       8.5 +/-    0.48  0.080 / 0.190
G32     33.3           54.3                4.7 +/-    1.40       5.6 +/-    1.40  0.120 / 0.210