PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-16:43:10
G02     260.0          78.9                8.7 +/-    0.50       8.8 +/-    0.50  0.090 / 0.140
G05     173.3          18.3               16.2 +/-    1.57      37.1 +/-    1.57  0.090 / 0.130
G06     40.0           53.0                7.6 +/-    0.55       9.3 +/-    0.55  0.040 / 0.050
G12     320.9          58.3                8.6 +/-    1.57       9.9 +/-    1.57  0.030 / 0.050
G17     77.6           16.3                7.4 +/-    0.79      17.9 +/-    0.79  0.150 / 0.410
G19     65.0           33.1                7.8 +/-    1.09      12.8 +/-    1.09  0.120 / 0.340
G24     240.9          31.5               10.3 +/-    1.36      17.4 +/-    1.36  0.040 / 0.040
G25     317.6          21.0                8.5 +/-    3.51      18.4 +/-    3.51  0.050 / 0.060