PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-14:57:40
G02     248.3          77.5               12.8 +/-    0.87      13.0 +/-    0.87  0.110 / 0.280
G05     173.5          16.1               17.9 +/-    1.55      43.3 +/-    1.55  0.110 / 0.250
G06     40.0           57.5               11.4 +/-    0.37      13.3 +/-    0.37  0.040 / 0.050
G12     321.4          54.0               11.9 +/-    1.53      14.4 +/-    1.53  0.040 / 0.050
G17     74.7           18.6               10.8 +/-    0.96      24.5 +/-    0.96  0.130 / 0.120
G19     61.5           35.4               10.0 +/-    0.76      15.8 +/-    0.76  0.080 / 0.110
G24     244.4          33.6               12.9 +/-    0.84      21.1 +/-    0.84  0.040 / 0.050
G25     317.3          16.9                9.8 +/-    1.63      23.2 +/-    1.63  0.030 / 0.050