PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-02:27:50
G08     265.3          18.1               10.9 +/-    1.05      25.1 +/-    1.05  0.030 / 0.020
G10     60.3           59.1                7.6 +/-    0.89       8.7 +/-    0.89  0.020 / 0.020
G11     310.1          19.0                8.0 +/-    1.30      17.9 +/-    1.30  0.160 / 0.450
G14     270.6          67.8                8.3 +/-    1.02       8.9 +/-    1.02  0.120 / 0.400
G18     91.6           36.8                7.3 +/-    0.78      11.2 +/-    0.78  0.200 / 0.260
G21     154.1          14.4                7.6 +/-    2.30      19.1 +/-    2.30  0.170 / 0.180
G24     40.2           11.2                7.5 +/-    2.33      20.4 +/-    2.33  0.030 / 0.050
G27     230.2          15.2               10.9 +/-    1.41      27.0 +/-    1.41  0.040 / 0.050
G31     179.2          29.6                8.5 +/-    1.57      15.0 +/-    1.57  0.160 / 0.210
G32     331.4          74.2                7.1 +/-    0.34       7.4 +/-    0.34  0.240 / 0.230