PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-14:43:10
G01     72.4           32.8                7.7 +/-    1.01      12.7 +/-    1.01  0.080 / 0.180
G07     136.3          29.3                8.8 +/-    0.87      15.6 +/-    0.87  0.170 / 0.210
G11     53.7           29.1                7.8 +/-    1.51      14.0 +/-    1.51  0.070 / 0.100
G13     278.8          36.9                7.9 +/-    1.62      12.2 +/-    1.62  0.060 / 0.080
G15     306.6          13.7                5.8 +/-    1.38      14.9 +/-    1.38  0.070 / 0.100
G17     232.0          70.5               10.0 +/-    0.85      10.5 +/-    0.85  0.060 / 0.100
G19     223.1          42.6               10.9 +/-    1.85      15.3 +/-    1.85  0.040 / 0.030
G28     17.0           59.5                8.9 +/-    0.68      10.2 +/-    0.68  0.030 / 0.030
G30     132.4          65.7                9.0 +/-    0.48       9.8 +/-    0.48  0.050 / 0.080