PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/15-07:12:50
G01     128.6          10.3              -20.0 +/-   11.91     -55.6 +/-   11.91  0.030 / 0.050
G07     49.8           69.3                6.6 +/-    0.60       7.0 +/-    0.60  0.040 / 0.050
G08     50.7           39.0                4.5 +/-    1.27       6.7 +/-    1.27  0.030 / 0.040
G09     174.4          33.4                8.6 +/-    0.97      14.1 +/-    0.97  0.030 / 0.040
G11     118.7          34.5                8.7 +/-    0.46      14.0 +/-    0.46  0.150 / 0.470
G17     198.8          14.8                4.8 +/-    2.10      11.9 +/-    2.10  0.210 / 0.290
G18     103.7          15.7                6.8 +/-    1.42      16.6 +/-    1.42  0.180 / 0.350
G23     161.3          10.8                4.8 +/-    4.13      13.2 +/-    4.13  0.100 / 0.240
G28     271.7          50.8                6.7 +/-    1.11       8.3 +/-    1.11  0.090 / 0.230
G30     328.5          57.5                4.2 +/-    0.66       4.9 +/-    0.66  0.060 / 0.080