PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/23-13:42:30
G07     42.0           68.3                8.0 +/-    0.63       8.6 +/-    0.63  0.050 / 0.050
G08     55.3           42.8              -10.8 +/-    6.24     -15.1 +/-    6.24  0.060 / 0.060
G09     177.4          42.1                7.5 +/-    0.75      10.5 +/-    0.75  0.030 / 0.020
G11     121.8          30.2                4.7 +/-    4.10       8.2 +/-    4.10  0.030 / 0.030
G17     198.6          10.6               -7.2 +/-    7.27     -19.8 +/-    7.27  0.180 / 0.340
G23     160.9          15.3                7.5 +/-    2.14      18.4 +/-    2.14  0.210 / 0.340
G27     38.3           11.7                6.1 +/-    1.31      16.5 +/-    1.31  0.030 / 0.040
G28     266.6          49.0              -80.9 +/-   31.17    -103.3 +/-   31.17  0.030 / 0.040
G30     323.4          52.7                7.6 +/-    1.08       9.2 +/-    1.08  0.120 / 0.190