PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-18:58:00
G02     79.2           17.1               16.8 +/-    2.32      39.8 +/-    2.32  0.090 / 0.160
G05     44.6           41.7               16.1 +/-    0.78      22.8 +/-    0.78  0.080 / 0.140
G13     107.5          30.9               19.6 +/-    1.18      33.6 +/-    1.18  0.130 / 0.270
G15     149.1          32.8               17.7 +/-    2.62      29.3 +/-    2.62  0.080 / 0.290
G18     227.8          22.6               17.0 +/-    2.22      35.2 +/-    2.22  0.060 / 0.110
G20     273.8          85.4               15.6 +/-    0.58      15.6 +/-    0.58  0.050 / 0.130
G21     292.4          33.7               14.3 +/-    0.96      23.3 +/-    0.96  0.040 / 0.030
G25     210.1          29.6               18.1 +/-    2.72      31.9 +/-    2.72  0.040 / 0.030
G26     313.8          13.8               -3.1 +/-   39.36      -7.9 +/-   39.36  0.060 / 0.040
G29     17.1           83.4               20.7 +/-    0.48      20.8 +/-    0.48  0.050 / 0.060