PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-14:28:10
G01     73.9           32.9                7.0 +/-    0.69      11.5 +/-    0.69  0.030 / 0.040
G07     135.6          30.5                7.7 +/-    1.51      13.3 +/-    1.51  0.030 / 0.040
G11     54.7           30.0                6.7 +/-    0.89      11.8 +/-    0.89  0.050 / 0.070
G13     280.5          36.9                8.0 +/-    1.14      12.2 +/-    1.14  0.040 / 0.120
G15     307.5          13.4                4.8 +/-    1.54      12.4 +/-    1.54  0.100 / 0.110
G17     229.7          69.3                7.3 +/-    0.85       7.8 +/-    0.85  0.100 / 0.120
G19     222.2          41.4                9.2 +/-    1.35      13.1 +/-    1.35  0.070 / 0.090
G28     14.8           59.7                6.8 +/-    0.70       7.8 +/-    0.70  0.260 / 0.170
G30     130.7          66.8                5.6 +/-    0.72       6.0 +/-    0.72  0.050 / 0.040