PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/18-21:57:30
G02     32.4084        56.2840          9.8250 +/-  0.6035   11.5537 +/-  0.6035  0.040 / 0.050
G05     138.9240       64.1985         12.6416 +/-  0.8616   13.8779 +/-  0.8616  0.040 / 0.050
G06     56.3263        12.5530          8.3089 +/-  1.4473   21.9046 +/-  1.4473  0.030 / 0.040
G12     192.7358       62.2015         10.9982 +/-  1.3882   12.2614 +/-  1.3882  0.040 / 0.040
G20     198.0346       31.5475         14.5476 +/-  2.0150   24.6812 +/-  2.0150  0.040 / 0.060
G25     284.8262       58.8836         12.2756 +/-  0.9086   14.0808 +/-  0.9086  0.030 / 0.060
G29     310.5584       31.9098         10.0601 +/-  1.1142   16.9443 +/-  1.1142  0.030 / 0.040