PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-03:58:00
G08     286.1          23.4               -6.0 +/-   17.58     -12.2 +/-   17.58  0.020 / 0.030
G10     16.4           63.3                6.2 +/-    0.67       6.8 +/-    0.67  0.020 / 0.020
G14     235.7          52.8                6.4 +/-    1.94       7.8 +/-    1.94  0.100 / 0.150
G18     68.2           49.8              -55.3 +/-   57.45     -69.9 +/-   57.45  0.110 / 0.140
G21     148.4          35.3                6.2 +/-    1.09       9.8 +/-    1.09  0.040 / 0.020
G24     52.7           24.3                4.7 +/-    2.04       9.3 +/-    2.04  0.030 / 0.020
G27     247.3          28.5                5.6 +/-    1.16      10.1 +/-    1.16  0.070 / 0.080
G31     182.6          10.9               -2.4 +/-   17.63      -6.6 +/-   17.63  0.050 / 0.120
G32     257.5          70.8                6.0 +/-    0.83       6.4 +/-    0.83  0.060 / 0.120