PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-20:27:30
G10     246.5          22.3               28.1 +/-    2.40      58.6 +/-    2.40  0.030 / 0.060
G13     59.8           33.8               13.5 +/-    0.84      22.0 +/-    0.84  0.060 / 0.050
G15     96.8           57.6               14.9 +/-    0.61      17.3 +/-    0.61  0.100 / 0.370
G16     304.4          13.6               18.8 +/-    3.64      48.2 +/-    3.64  0.120 / 0.330
G18     262.3          53.1               21.1 +/-    0.95      25.7 +/-    0.95  0.120 / 0.280
G20     39.2           52.9               14.5 +/-    0.54      17.7 +/-    0.54  0.120 / 0.330
G21     329.7          58.1               19.1 +/-    0.63      22.1 +/-    0.63  0.060 / 0.050
G26     276.8          16.8               21.9 +/-    2.18      52.1 +/-    2.18  0.060 / 0.060
G29     161.0          50.8               20.0 +/-    1.02      25.0 +/-    1.02  0.040 / 0.100