PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-20:12:50
G02     77.9           18.5               15.2 +/-    2.07      34.8 +/-    2.07  0.090 / 0.160
G05     44.7           44.1               14.5 +/-    0.94      19.8 +/-    0.94  0.110 / 0.130
G13     109.1          30.2               20.2 +/-    0.88      35.3 +/-    0.88  0.070 / 0.350
G15     150.6          31.4               19.8 +/-    0.99      33.7 +/-    0.99  0.110 / 0.130
G18     227.1          21.1               18.4 +/-    2.11      39.4 +/-    2.11  0.070 / 0.110
G20     263.4          85.3               15.6 +/-    0.21      15.7 +/-    0.21  0.040 / 0.040
G21     291.0          32.4               14.9 +/-    1.23      24.8 +/-    1.23  0.060 / 0.060
G25     210.1          30.3               17.2 +/-    1.63      29.9 +/-    1.63  0.040 / 0.030
G26     314.2          13.8              -15.2 +/-   30.94     -38.8 +/-   30.94  0.030 / 0.030
G29     3.7            81.8               17.4 +/-    0.33      17.5 +/-    0.33  0.020 / 0.020