PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-14:43:10
G01     65.8           31.9                7.0 +/-    1.78      11.8 +/-    1.78  0.030 / 0.040
G06     181.5          10.4              -16.6 +/-   30.32     -45.8 +/-   30.32  0.030 / 0.040
G07     139.4          24.2                9.1 +/-    0.62      18.2 +/-    0.62  0.040 / 0.130
G11     50.2           25.1                4.0 +/-    2.54       7.9 +/-    2.54  0.060 / 0.120
G13     271.6          36.2                8.6 +/-    2.68      13.4 +/-    2.68  0.060 / 0.120
G15     301.5          15.0                3.4 +/-    1.63       8.5 +/-    1.63  0.090 / 0.140
G17     245.9          75.3                8.1 +/-    0.79       8.3 +/-    0.79  0.050 / 0.100
G19     227.9          48.0              -62.5 +/-   40.67     -80.8 +/-   40.67  0.060 / 0.080
G28     27.0           58.1                1.2 +/-    2.70       1.4 +/-    2.70  0.030 / 0.040
G30     138.8          60.0               10.0 +/-    0.75      11.4 +/-    0.75  0.030 / 0.050