PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-09:58:00
G08     264.4          17.3                6.4 +/-    1.11      15.1 +/-    1.11  0.240 / 0.330
G10     67.2           56.3                6.4 +/-    0.33       7.5 +/-    0.33  0.300 / 0.580
G11     309.2          19.4                4.4 +/-    1.43       9.8 +/-    1.43  0.030 / 0.030
G14     274.0          68.5                6.0 +/-    0.68       6.4 +/-    0.68  0.030 / 0.020
G18     310.1          36.0                5.6 +/-    1.27       8.8 +/-    1.27  0.030 / 0.050
G20     98.2           34.6                6.5 +/-    0.87      10.4 +/-    0.87  0.040 / 0.050
G21     154.8          11.3                5.9 +/-    5.66      16.1 +/-    5.66  0.030 / 0.020
G27     231.3          14.8                5.6 +/-    2.31      14.0 +/-    2.31  0.030 / 0.020
G31     178.4          32.3                6.6 +/-    1.24      11.1 +/-    1.24  0.190 / 0.450
G32     325.3          73.7                5.5 +/-    0.54       5.7 +/-    0.54  0.320 / 0.340