PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-03:42:30
G08     289.2          23.0               10.2 +/-    1.13      20.9 +/-    1.13  0.080 / 0.130
G10     16.4           63.0                8.4 +/-    0.67       9.3 +/-    0.67  0.090 / 0.120
G14     233.2          47.5               12.2 +/-    0.76      15.9 +/-    0.76  0.070 / 0.080
G18     317.7          13.0                6.8 +/-    1.67      17.9 +/-    1.67  0.060 / 0.080
G20     49.5           61.7               10.1 +/-    0.40      11.3 +/-    0.40  0.050 / 0.110
G21     148.6          37.3                9.4 +/-    1.13      14.3 +/-    1.13  0.050 / 0.110
G24     51.7           22.8                7.3 +/-    0.73      15.0 +/-    0.73  0.030 / 0.030
G27     250.3          29.5               11.7 +/-    1.69      20.6 +/-    1.69  0.030 / 0.030
G31     181.7          11.5                2.0 +/-   21.44       5.3 +/-   21.44  0.100 / 0.130
G32     258.3          72.7               10.0 +/-    0.62      10.4 +/-    0.62  0.090 / 0.130