PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-04:12:40
G01     305.3          34.3                5.9 +/-    1.46       9.6 +/-    1.46  0.040 / 0.030
G10     107.4          39.9                6.1 +/-    0.82       8.9 +/-    0.82  0.030 / 0.040
G11     277.7          29.6                6.3 +/-    0.75      11.2 +/-    0.75  0.050 / 0.050
G14     4.6            65.3                5.3 +/-    0.72       5.8 +/-    0.72  0.040 / 0.050
G18     118.0          14.1                5.3 +/-    1.52      13.4 +/-    1.52  0.120 / 0.150
G22     310.1          27.3                6.8 +/-    2.14      12.6 +/-    2.14  0.050 / 0.090
G25     76.3           16.3                5.6 +/-    1.19      13.6 +/-    1.19  0.030 / 0.040
G31     167.2          66.1                6.2 +/-    0.49       6.7 +/-    0.49  0.030 / 0.040
G32     35.9           52.7                5.1 +/-    1.20       6.2 +/-    1.20  0.100 / 0.170