PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/23-20:27:50
G02     329.2          79.0               15.8 +/-    8.53      16.1 +/-    8.53  0.090 / 0.140
G05     166.4          33.2               13.3 +/-    1.41      21.8 +/-    1.41  0.110 / 0.120
G06     42.5           38.0               -5.2 +/-   27.45      -7.9 +/-   27.45  0.050 / 0.100
G12     306.0          74.7               25.0 +/-   21.19      25.8 +/-   21.19  0.050 / 0.090
G19     78.3           24.3              -13.2 +/-   61.08     -26.1 +/-   61.08  0.080 / 0.340
G24     228.4          22.0               12.6 +/-    5.94      26.5 +/-    5.94  0.200 / 0.310
G25     316.3          35.2               11.3 +/-    1.57      17.9 +/-    1.57  0.030 / 0.030
G29     288.2          10.9                1.3 +/-   25.40       3.7 +/-   25.40  0.030 / 0.040