PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-22:27:50
G10     254.7          29.1               23.1 +/-    3.38      41.3 +/-    3.38  0.090 / 0.090
G13     50.6           28.7               17.5 +/-    1.67      31.6 +/-    1.67  0.130 / 0.130
G15     78.4           56.5               20.0 +/-    0.65      23.4 +/-    0.65  0.030 / 0.040
G16     293.9          13.9               15.6 +/-    1.75      39.9 +/-    1.75  0.030 / 0.050
G18     276.4          58.5               18.8 +/-    1.71      21.7 +/-    1.71  0.180 / 0.310
G20     46.4           43.9               17.5 +/-    0.95      23.9 +/-    0.95  0.130 / 0.280
G21     341.2          64.2               20.0 +/-    0.57      22.0 +/-    0.57  0.060 / 0.060
G26     266.4          13.5               20.1 +/-    1.84      52.0 +/-    1.84  0.050 / 0.060
G27     322.0          10.4              -13.7 +/-   11.24     -37.9 +/-   11.24  0.170 / 0.200
G29     164.5          41.0               23.4 +/-    0.71      33.5 +/-    0.71  0.050 / 0.060