PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-07:27:50
G01     60.2           29.9                4.8 +/-    2.82       8.5 +/-    2.82  0.040 / 0.030
G06     179.4          13.6               -0.5 +/-   22.59      -1.2 +/-   22.59  0.040 / 0.030
G07     141.0          23.5                7.7 +/-    2.16      15.6 +/-    2.16  0.120 / 0.220
G11     49.9           28.1                3.8 +/-    1.67       7.0 +/-    1.67  0.110 / 0.260
G13     263.1          36.9                7.8 +/-    1.35      11.9 +/-    1.35  0.080 / 0.110
G15     294.0          16.8                2.6 +/-    2.24       6.1 +/-    2.24  0.080 / 0.130
G17     249.6          75.1                9.3 +/-    0.30       9.5 +/-    0.30  0.030 / 0.030
G19     229.9          51.4                9.2 +/-    3.00      11.5 +/-    3.00  0.030 / 0.030
G28     17.7           60.5                4.5 +/-    2.03       5.1 +/-    2.03  0.050 / 0.060
G30     143.3          57.5                9.8 +/-    0.33      11.4 +/-    0.33  0.050 / 0.050