PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-17:57:50
G05     48.5           19.9                9.7 +/-    2.46      21.4 +/-    2.46  0.040 / 0.070
G10     236.8          13.5               10.8 +/-    2.97      28.0 +/-    2.97  0.050 / 0.070
G13     74.1           36.0                9.8 +/-    1.44      15.3 +/-    1.44  0.130 / 0.360
G15     129.5          52.4               10.7 +/-    0.28      13.1 +/-    0.28  0.100 / 0.360
G16     313.1          12.9                9.4 +/-    2.73      24.5 +/-    2.73  0.080 / 0.080
G20     249.0          37.7               11.8 +/-    1.70      17.9 +/-    1.70  0.070 / 0.100
G21     314.9          48.2               10.1 +/-    0.76      13.0 +/-    0.76  0.030 / 0.030
G26     286.8          20.1                8.6 +/-    1.69      18.9 +/-    1.69  0.030 / 0.040
G29     155.7          71.4               11.3 +/-    0.43      11.8 +/-    0.43  0.110 / 0.120