PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/30-09:27:40
G03     221.3          60.7              -18.9 +/-   10.82     -21.3 +/-   10.82  0.090 / 0.100
G07     256.5          16.9                1.4 +/-    1.50       3.4 +/-    1.50  0.080 / 0.120
G09     310.3          28.8                0.9 +/-    1.26       1.7 +/-    1.26  0.040 / 0.060
G16     103.4          65.0               30.2 +/-   10.97      33.0 +/-   10.97  0.060 / 0.050
G22     188.0          43.5                3.9 +/-    0.55       5.4 +/-    0.55  0.130 / 0.210
G23     327.0          56.9                3.6 +/-    0.82       4.2 +/-    0.82  0.120 / 0.200
G26     56.4           46.2              -97.3 +/-   52.23    -128.9 +/-   52.23  0.040 / 0.050
G27     134.2          9.9               -13.5 +/-   13.47     -37.7 +/-   13.47  0.040 / 0.040
G31     58.0           11.9               13.3 +/-   11.07      35.6 +/-   11.07  0.180 / 0.230