PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-02:57:40
G01     226.1          18.7                7.0 +/-    2.73      15.8 +/-    2.73  0.050 / 0.050
G03     295.2          65.5                4.0 +/-    1.69       4.4 +/-    1.69  0.040 / 0.040
G14     82.6           28.0                3.6 +/-    0.80       6.6 +/-    0.80  0.130 / 0.320
G16     146.5          42.6                8.3 +/-    1.10      11.5 +/-    1.10  0.170 / 0.430
G22     229.6          72.4                6.1 +/-    0.56       6.3 +/-    0.56  0.080 / 0.180
G23     306.4          37.1                5.0 +/-    0.79       7.7 +/-    0.79  0.080 / 0.170
G26     101.4          53.4                7.4 +/-    0.90       9.0 +/-    0.90  0.040 / 0.100
G31     45.0           32.9                2.9 +/-    0.66       4.8 +/-    0.66  0.050 / 0.090