PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/01-03:57:50
G08     280.2          22.7                9.9 +/-    1.06      20.4 +/-    1.06  0.040 / 0.020
G10     29.0           62.9                6.8 +/-    1.21       7.5 +/-    1.21  0.040 / 0.030
G14     242.6          57.5                8.8 +/-    3.06      10.2 +/-    3.06  0.070 / 0.120
G18     75.1           46.6                5.7 +/-    1.17       7.5 +/-    1.17  0.070 / 0.100
G21     150.6          29.6                8.2 +/-    2.28      14.4 +/-    2.28  0.030 / 0.030
G24     48.4           21.2                7.0 +/-    3.46      14.9 +/-    3.46  0.030 / 0.030
G27     242.1          25.1               10.4 +/-    2.01      20.3 +/-    2.01  0.080 / 0.140
G31     181.3          15.9                8.6 +/-    1.47      21.1 +/-    1.47  0.200 / 0.100
G32     274.8          73.9                6.9 +/-    1.09       7.2 +/-    1.09  0.040 / 0.090