PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-18:57:30
G02     270.2          79.2               10.5 +/-    0.96      10.7 +/-    0.96  0.070 / 0.120
G05     171.4          21.9               16.1 +/-    1.57      33.8 +/-    1.57  0.070 / 0.140
G06     40.3           48.8               10.3 +/-    0.60      13.2 +/-    0.60  0.030 / 0.050
G12     319.8          62.8               10.1 +/-    1.29      11.2 +/-    1.29  0.030 / 0.050
G17     80.3           14.3               10.1 +/-    1.57      25.5 +/-    1.57  0.090 / 0.160
G19     68.2           31.0               11.1 +/-    0.98      19.0 +/-    0.98  0.100 / 0.180
G24     237.8          29.5               12.9 +/-    2.24      22.7 +/-    2.24  0.060 / 0.180
G25     317.7          25.3               10.9 +/-    2.70      21.1 +/-    2.70  0.060 / 0.180