PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-20:57:50
G10     256.4          30.4               19.0 +/-    2.45      33.0 +/-    2.45  0.130 / 0.310
G13     49.1           27.4               15.5 +/-    1.64      28.7 +/-    1.64  0.170 / 0.330
G15     74.0           55.2               17.8 +/-    0.63      21.2 +/-    0.63  0.060 / 0.050
G16     293.1          13.4               15.0 +/-    1.82      38.8 +/-    1.82  0.040 / 0.050
G18     280.3          60.0               17.2 +/-    0.89      19.5 +/-    0.89  0.110 / 0.280
G20     47.3           43.0               17.3 +/-    0.89      24.0 +/-    0.89  0.130 / 0.290
G21     345.7          66.0               15.0 +/-    0.90      16.2 +/-    0.90  0.140 / 0.270
G26     265.8          12.6               17.0 +/-    2.18      44.8 +/-    2.18  0.150 / 0.300
G27     321.6          11.8               10.5 +/-   25.92      28.2 +/-   25.92  0.070 / 0.170
G29     164.4          38.0               20.2 +/-    1.51      30.4 +/-    1.51  0.070 / 0.170