PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-07:57:50
G07     7.5            66.8                5.0 +/-    0.71       5.3 +/-    0.71  0.060 / 0.150
G08     75.3           52.5                6.9 +/-    0.67       8.4 +/-    0.67  0.070 / 0.160
G09     179.7          55.6                9.1 +/-    1.49      10.7 +/-    1.49  0.070 / 0.160
G11     135.9          24.4                7.6 +/-    1.65      15.1 +/-    1.65  0.060 / 0.130
G23     158.7          23.7                8.0 +/-    2.20      16.1 +/-    2.20  0.030 / 0.050
G27     43.4           21.8                2.8 +/-    1.89       6.0 +/-    1.89  0.040 / 0.040
G28     248.4          35.1                6.9 +/-    1.31      11.0 +/-    1.31  0.060 / 0.160
G30     314.0          45.4                4.2 +/-    1.09       5.6 +/-    1.09  0.060 / 0.170