PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-16:43:10
G02     61.2           31.2               12.1 +/-    1.24      20.7 +/-    1.24  0.030 / 0.040
G05     58.4           62.6               13.2 +/-    0.88      14.7 +/-    0.88  0.030 / 0.040
G12     185.6          31.6               15.8 +/-    1.14      26.8 +/-    1.14  0.060 / 0.120
G13     128.5          16.1               19.8 +/-    2.73      47.8 +/-    2.73  0.060 / 0.120
G15     162.5          13.4               18.8 +/-    1.52      48.5 +/-    1.52  0.040 / 0.050
G20     209.0          61.2               16.5 +/-    1.15      18.5 +/-    1.15  0.040 / 0.050
G21     273.3          20.4               11.4 +/-    1.52      24.8 +/-    1.52  0.090 / 0.240
G25     231.6          50.3               14.7 +/-    2.19      18.5 +/-    2.19  0.080 / 0.320
G29     334.8          61.4               12.2 +/-    0.64      13.7 +/-    0.64  0.040 / 0.070