PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-03:27:50
G01     320.6          11.9               -4.9 +/-   31.19     -13.2 +/-   31.19  0.110 / 0.370
G08     262.4          16.7                9.4 +/-    1.51      22.4 +/-    1.51  0.130 / 0.380
G10     66.0           57.8                4.4 +/-    0.44       5.1 +/-    0.44  0.150 / 0.400
G11     307.7          21.1                5.0 +/-    3.41      10.8 +/-    3.41  0.160 / 0.290
G14     278.9          69.3                4.7 +/-    0.69       5.0 +/-    0.69  0.030 / 0.040
G18     94.4           35.2                5.1 +/-    0.50       8.0 +/-    0.50  0.030 / 0.050
G21     154.6          11.8                5.4 +/-    3.35      14.4 +/-    3.35  0.040 / 0.060
G27     227.9          13.2                9.3 +/-    4.03      24.3 +/-    4.03  0.050 / 0.050
G31     178.2          33.3                7.2 +/-    1.29      11.9 +/-    1.29  0.180 / 0.370
G32     343.9          72.8                5.3 +/-    0.45       5.6 +/-    0.45  0.150 / 0.360