PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-07:42:50
G07     320.2          53.6                6.2 +/-    1.64       7.4 +/-    1.64  0.030 / 0.050
G08     122.4          46.1                7.9 +/-    1.09      10.4 +/-    1.09  0.040 / 0.060
G09     239.3          83.3                5.0 +/-    0.80       5.0 +/-    0.80  0.050 / 0.070
G16     43.8           15.3                1.4 +/-    2.12       3.4 +/-    2.12  0.050 / 0.070
G23     149.7          51.7                6.6 +/-    0.72       8.2 +/-    0.72  0.220 / 0.570
G27     68.5           36.2                5.1 +/-    0.56       8.0 +/-    0.56  0.260 / 0.490
G28     228.0          13.7                5.5 +/-    2.31      14.1 +/-    2.31  0.140 / 0.550
G30     292.4          27.1                4.6 +/-    2.56       8.5 +/-    2.56  0.170 / 0.400