PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-08:42:40
G01     59.7           29.8                4.2 +/-    2.27       7.4 +/-    2.27  0.040 / 0.030
G06     179.1          14.3                1.4 +/-    8.70       3.4 +/-    8.70  0.040 / 0.050
G07     141.2          22.5                5.7 +/-    1.58      11.7 +/-    1.58  0.060 / 0.110
G11     49.3           27.1                2.8 +/-    1.46       5.3 +/-    1.46  0.100 / 0.100
G13     262.5          36.7                6.6 +/-    1.48      10.2 +/-    1.48  0.130 / 0.310
G15     294.2          16.5                3.6 +/-    1.82       8.5 +/-    1.82  0.140 / 0.350
G17     250.4          74.9                7.1 +/-    0.36       7.3 +/-    0.36  0.040 / 0.050
G19     230.6          51.9                7.2 +/-    2.93       8.9 +/-    2.93  0.050 / 0.060
G28     19.6           60.3                2.2 +/-    1.12       2.5 +/-    1.12  0.080 / 0.130
G30     143.6          56.3                7.5 +/-    0.54       8.8 +/-    0.54  0.070 / 0.120