PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-22:28:00
G10     256.4          30.4               22.6 +/-    2.33      39.3 +/-    2.33  0.150 / 0.320
G13     49.2           27.5               15.5 +/-    1.06      28.7 +/-    1.06  0.180 / 0.390
G15     75.0           55.8               18.9 +/-    0.51      22.4 +/-    0.51  0.060 / 0.060
G16     292.1          13.7               18.1 +/-    1.63      46.6 +/-    1.63  0.040 / 0.050
G18     279.5          59.6               20.2 +/-    0.74      23.0 +/-    0.74  0.090 / 0.300
G20     47.7           42.4               16.7 +/-    0.52      23.4 +/-    0.52  0.120 / 0.300
G21     344.1          65.5               17.6 +/-    1.03      19.2 +/-    1.03  0.060 / 0.180
G26     264.8          12.7               22.2 +/-    1.66      58.5 +/-    1.66  0.060 / 0.180
G27     321.5          11.9               13.3 +/-   15.61      35.5 +/-   15.61  0.040 / 0.080
G29     164.9          39.0               20.4 +/-    1.06      30.2 +/-    1.06  0.040 / 0.080