PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-00:57:40
G08     263.8          17.3               12.1 +/-    1.38      28.5 +/-    1.38  0.030 / 0.030
G10     63.8           58.3                9.4 +/-    0.74      10.8 +/-    0.74  0.030 / 0.030
G11     309.1          19.7                7.3 +/-    1.78      16.1 +/-    1.78  0.240 / 0.300
G14     275.0          68.6                8.3 +/-    0.76       8.9 +/-    0.76  0.150 / 0.270
G18     93.7           35.1                9.1 +/-    0.66      14.5 +/-    0.66  0.100 / 0.250
G21     154.2          11.9                9.1 +/-    3.00      24.4 +/-    3.00  0.110 / 0.330
G24     39.5           9.9                 6.9 +/-    3.39      19.4 +/-    3.39  0.120 / 0.260
G27     228.9          14.0               12.0 +/-    1.87      30.5 +/-    1.87  0.170 / 0.390
G31     179.7          30.6               11.6 +/-    1.09      20.1 +/-    1.09  0.040 / 0.040
G32     334.3          73.6                8.1 +/-    0.38       8.4 +/-    0.38  0.030 / 0.040