PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-18:28:00
G02     61.3           31.5               14.2 +/-    1.11      24.1 +/-    1.11  0.140 / 0.380
G05     58.5           63.4               15.0 +/-    0.72      16.5 +/-    0.72  0.110 / 0.310
G12     185.1          30.4               17.4 +/-    1.76      30.2 +/-    1.76  0.040 / 0.120
G13     128.1          16.6               19.6 +/-    1.82      46.9 +/-    1.82  0.050 / 0.120
G15     162.6          13.6               20.7 +/-    1.55      53.3 +/-    1.55  0.040 / 0.060
G20     208.9          62.9               19.5 +/-    0.42      21.6 +/-    0.42  0.040 / 0.070
G21     273.4          20.0               14.0 +/-    1.12      30.8 +/-    1.12  0.100 / 0.250
G25     229.1          49.4               19.2 +/-    1.47      24.4 +/-    1.47  0.100 / 0.330
G29     333.8          60.9               13.0 +/-    0.92      14.6 +/-    0.92  0.040 / 0.060