PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-12:43:10
G07     43.9           68.4                5.7 +/-    0.64       6.0 +/-    0.64  0.060 / 0.050
G08     54.3           42.0               -6.7 +/-   15.75      -9.4 +/-   15.75  0.050 / 0.060
G09     176.8          40.3                6.0 +/-    0.93       8.7 +/-    0.93  0.030 / 0.040
G11     121.1          30.9               14.3 +/-   13.64      24.6 +/-   13.64  0.040 / 0.030
G17     198.7          11.6               -2.1 +/-   15.64      -5.7 +/-   15.64  0.030 / 0.030
G23     161.0          14.5                4.8 +/-    2.36      12.2 +/-    2.36  0.020 / 0.020
G27     38.0           10.9                5.0 +/-    2.02      13.6 +/-    2.02  0.180 / 0.290
G28     268.1          49.7              -37.7 +/-   54.93     -47.7 +/-   54.93  0.170 / 0.210
G30     324.6          53.8                4.4 +/-    0.96       5.3 +/-    0.96  0.440 / 0.350