PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-13:43:10
G01     74.4           33.2                7.3 +/-    0.71      12.0 +/-    0.71  0.030 / 0.060
G07     135.6          33.7                8.9 +/-    1.31      14.5 +/-    1.31  0.030 / 0.040
G11     55.2           31.9                5.6 +/-    1.10       9.4 +/-    1.10  0.050 / 0.090
G13     278.1          38.0                7.7 +/-    1.74      11.6 +/-    1.74  0.210 / 0.270
G15     308.0          12.8                4.9 +/-    1.56      12.9 +/-    1.56  0.030 / 0.050
G17     228.5          67.5                9.2 +/-    1.43       9.9 +/-    1.43  0.040 / 0.060
G18     51.1           19.3                5.4 +/-    1.01      12.0 +/-    1.01  0.060 / 0.110
G19     221.9          35.8               10.2 +/-    1.44      15.9 +/-    1.44  0.080 / 0.110
G28     13.7           60.0                6.2 +/-    0.47       7.0 +/-    0.47  0.060 / 0.120
G30     131.8          66.4                8.7 +/-    0.66       9.4 +/-    0.66  0.060 / 0.120