PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/01-02:27:50
G08     263.6          17.3               10.7 +/-    0.85      25.3 +/-    0.85  0.030 / 0.020
G10     63.7           58.3                9.3 +/-    0.70      10.7 +/-    0.70  0.030 / 0.030
G11     308.8          20.1                7.0 +/-    2.26      15.4 +/-    2.26  0.020 / 0.020
G14     275.4          68.7                9.3 +/-    0.55       9.9 +/-    0.55  0.020 / 0.020
G18     93.4           35.6                9.2 +/-    1.25      14.5 +/-    1.25  0.120 / 0.340
G21     154.4          12.6                7.7 +/-    1.23      20.2 +/-    1.23  0.150 / 0.340
G24     39.5           9.9                 5.8 +/-    3.57      16.2 +/-    3.57  0.060 / 0.090
G27     228.8          14.0               10.8 +/-    2.05      27.4 +/-    2.05  0.060 / 0.090
G31     178.9          31.5               11.2 +/-    0.89      19.1 +/-    0.89  0.050 / 0.080
G32     337.8          73.5                9.6 +/-    0.40      10.0 +/-    0.40  0.060 / 0.060