PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-02:58:00
G08     266.5          18.6               11.1 +/-    1.30      25.4 +/-    1.30  0.030 / 0.030
G10     57.8           59.5               10.5 +/-    1.08      12.0 +/-    1.08  0.020 / 0.020
G11     310.8          18.4               10.2 +/-    1.94      23.4 +/-    1.94  0.030 / 0.030
G14     267.6          67.2               10.0 +/-    1.40      10.7 +/-    1.40  0.030 / 0.030
G18     90.3           37.8               10.6 +/-    0.89      16.0 +/-    0.89  0.130 / 0.380
G21     153.9          15.8                8.5 +/-    3.33      20.6 +/-    3.33  0.170 / 0.370
G24     40.7           12.1                8.7 +/-    1.78      23.1 +/-    1.78  0.040 / 0.050
G27     231.1          16.1               11.3 +/-    2.51      27.3 +/-    2.51  0.030 / 0.050
G31     179.2          28.6               11.2 +/-    1.42      20.2 +/-    1.42  0.160 / 0.230
G32     328.0          74.6               10.0 +/-    0.61      10.3 +/-    0.61  0.160 / 0.260