PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/17-01:57:50
G01     315.8          23.9                6.8 +/-    2.51      13.7 +/-    2.51  0.130 / 0.420
G10     89.7           49.9                9.0 +/-    0.49      11.4 +/-    0.49  0.130 / 0.440
G11     294.7          27.3                6.6 +/-    1.45      12.2 +/-    1.45  0.090 / 0.140
G14     325.7          71.2                8.9 +/-    0.97       9.3 +/-    0.97  0.110 / 0.160
G18     107.6          24.3                8.5 +/-    0.80      16.9 +/-    0.80  0.040 / 0.030
G22     303.9          15.3                5.0 +/-    3.16      12.4 +/-    3.16  0.040 / 0.040
G25     91.8           11.6                8.0 +/-    1.60      21.6 +/-    1.60  0.050 / 0.060
G31     176.4          48.3               11.2 +/-    1.57      14.4 +/-    1.57  0.050 / 0.060
G32     14.5           64.0                6.8 +/-    0.80       7.4 +/-    0.80  0.130 / 0.280