PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-07:12:30
G07     6.7            66.7                4.6 +/-    0.52       5.0 +/-    0.52  0.060 / 0.080
G08     74.4           52.1                5.6 +/-    0.63       6.9 +/-    0.63  0.060 / 0.060
G09     179.2          55.2                7.4 +/-    1.42       8.7 +/-    1.42  0.040 / 0.040
G11     136.2          24.4                6.3 +/-    1.78      12.5 +/-    1.78  0.030 / 0.040
G23     158.9          24.0                5.8 +/-    1.01      11.6 +/-    1.01  0.060 / 0.150
G27     43.4           21.7                2.5 +/-    1.82       5.4 +/-    1.82  0.070 / 0.140
G28     248.3          34.9                6.1 +/-    1.48       9.7 +/-    1.48  0.060 / 0.150
G30     313.7          45.0                3.7 +/-    0.69       5.0 +/-    0.69  0.060 / 0.180