PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-07:57:30
G07     21.7           68.6                3.8 +/-    0.52       4.0 +/-    0.52  0.040 / 0.050
G08     59.7           45.7                2.6 +/-    0.49       3.4 +/-    0.49  0.040 / 0.060
G09     174.5          43.0                6.7 +/-    1.10       9.3 +/-    1.10  0.100 / 0.120
G11     127.7          28.8                6.6 +/-    2.40      11.8 +/-    2.40  0.080 / 0.160
G18     112.1          10.9               -0.3 +/-   19.56      -0.8 +/-   19.56  0.030 / 0.040
G23     160.8          19.5                4.6 +/-    1.89      10.2 +/-    1.89  0.030 / 0.040
G27     40.5           17.3                2.0 +/-    1.18       4.7 +/-    1.18  0.100 / 0.320
G28     259.5          45.4                4.6 +/-    1.28       6.2 +/-    1.28  0.090 / 0.390
G30     319.8          50.1                3.7 +/-    1.22       4.6 +/-    1.22  0.100 / 0.210