PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-15:13:10
G02     241.6          75.6               13.4 +/-    0.34      13.8 +/-    0.34  0.080 / 0.220
G05     174.5          14.2               15.7 +/-    1.94      39.9 +/-    1.94  0.130 / 0.300
G06     40.5           59.3               10.9 +/-    1.45      12.4 +/-    1.45  0.040 / 0.040
G12     321.5          52.1               10.4 +/-    0.69      12.8 +/-    0.69  0.060 / 0.040
G17     73.1           19.8               10.5 +/-    1.96      23.3 +/-    1.96  0.080 / 0.100
G19     59.5           36.6                9.7 +/-    0.76      14.9 +/-    0.76  0.070 / 0.080
G24     246.6          34.8               11.0 +/-    2.53      17.5 +/-    2.53  0.080 / 0.170
G25     317.0          15.4                7.1 +/-    3.51      17.6 +/-    3.51  0.080 / 0.170