PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-06:57:40
G07     324.8          55.4                3.8 +/-    0.53       4.5 +/-    0.53  0.040 / 0.050
G08     116.1          48.6                5.4 +/-    0.65       7.0 +/-    0.65  0.050 / 0.040
G09     208.6          81.0                3.9 +/-    0.49       4.0 +/-    0.49  0.070 / 0.070
G16     44.8           12.0                1.3 +/-    2.82       3.3 +/-    2.82  0.070 / 0.080
G23     151.8          48.3              -15.0 +/-    0.67     -19.3 +/-    0.67  0.030 / 0.030
G27     63.9           35.1                5.3 +/-    1.18       8.4 +/-    1.18  0.030 / 0.030
G28     230.2          16.5                5.3 +/-    2.46      12.8 +/-    2.46  0.130 / 0.250
G30     295.1          29.0                3.1 +/-    1.91       5.5 +/-    1.91  0.350 / 0.310