PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-12:42:40
G07     47.9           68.4                5.8 +/-    0.77       6.2 +/-    0.77  0.070 / 0.060
G08     53.1           41.0                4.7 +/-    0.89       6.8 +/-    0.89  0.050 / 0.060
G09     176.7          38.8                5.5 +/-    1.11       8.2 +/-    1.11  0.120 / 0.240
G11     119.8          31.7                5.5 +/-    1.99       9.3 +/-    1.99  0.160 / 0.240
G17     198.7          13.0                2.9 +/-    2.46       7.4 +/-    2.46  0.030 / 0.030
G23     161.0          13.2                4.1 +/-    2.16      10.7 +/-    2.16  0.040 / 0.030
G27     37.7           9.7                 4.5 +/-    3.59      12.8 +/-    3.59  0.030 / 0.030
G28     270.1          50.5                5.9 +/-    2.21       7.4 +/-    2.21  0.030 / 0.030
G30     326.0          54.9                5.0 +/-    0.74       6.0 +/-    0.74  0.190 / 0.530