PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-01:57:50
G01     320.7          11.9              -17.2 +/-   20.39     -46.1 +/-   20.39  0.040 / 0.030
G08     262.5          16.7                7.3 +/-    0.59      17.3 +/-    0.59  0.030 / 0.030
G10     66.0           57.8                4.9 +/-    0.85       5.6 +/-    0.85  0.210 / 0.260
G11     308.0          20.7                6.1 +/-    1.42      13.1 +/-    1.42  0.220 / 0.420
G14     278.7          69.3                5.0 +/-    0.51       5.4 +/-    0.51  0.100 / 0.220
G18     94.7           34.6                4.0 +/-    1.06       6.4 +/-    1.06  0.170 / 0.320
G21     154.5          11.2                6.9 +/-    1.69      18.9 +/-    1.69  0.160 / 0.470
G27     227.9          13.2                6.7 +/-    2.41      17.4 +/-    2.41  0.030 / 0.050
G31     179.0          32.5                5.0 +/-    1.57       8.3 +/-    1.57  0.040 / 0.050
G32     340.7          73.0                6.8 +/-    0.38       7.1 +/-    0.38  0.060 / 0.080