PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/01-02:27:50
G01     320.8          10.9              -18.3 +/-   22.59     -50.2 +/-   22.59  0.180 / 0.300
G08     263.6          17.3               10.5 +/-    2.63      24.8 +/-    2.63  0.220 / 0.300
G10     63.7           58.3                8.2 +/-    0.52       9.5 +/-    0.52  0.110 / 0.460
G11     308.8          20.1               10.1 +/-    2.77      22.1 +/-    2.77  0.100 / 0.450
G14     275.4          68.7                9.6 +/-    0.50      10.2 +/-    0.50  0.030 / 0.040
G18     93.4           35.6                8.5 +/-    0.46      13.4 +/-    0.46  0.030 / 0.040
G21     154.4          12.6                7.2 +/-    4.47      19.1 +/-    4.47  0.050 / 0.090
G27     228.8          14.0               11.3 +/-    1.36      28.9 +/-    1.36  0.050 / 0.120
G31     178.9          31.5               11.0 +/-    2.74      18.7 +/-    2.74  0.040 / 0.040
G32     337.8          73.5                9.4 +/-    0.58       9.8 +/-    0.58  0.040 / 0.070