PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-17:57:50
G02     75.6           19.7               18.1 +/-    1.90      40.2 +/-    1.90  0.080 / 0.300
G05     45.3           45.8               17.9 +/-    0.58      23.9 +/-    0.58  0.050 / 0.290
G12     181.4          13.5               21.0 +/-    1.70      54.2 +/-    1.70  0.100 / 0.150
G13     112.5          28.1               21.7 +/-    1.03      39.6 +/-    1.03  0.110 / 0.150
G15     152.0          28.6               23.8 +/-    1.24      42.9 +/-    1.24  0.030 / 0.060
G18     225.3          18.7               22.3 +/-    4.16      50.7 +/-    4.16  0.030 / 0.060
G20     235.6          81.3               19.9 +/-    0.46      20.1 +/-    0.46  0.050 / 0.040
G21     288.5          31.2               17.5 +/-    1.07      30.0 +/-    1.07  0.040 / 0.040
G25     213.7          34.2               22.3 +/-    2.37      35.9 +/-    2.37  0.090 / 0.110
G29     359.4          79.3               18.8 +/-    0.55      19.1 +/-    0.55  0.090 / 0.120