PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-07:42:40
G07     8.7            67.0                5.3 +/-    0.99       5.7 +/-    0.99  0.030 / 0.040
G08     73.9           52.2                5.6 +/-    1.21       6.8 +/-    1.21  0.030 / 0.030
G09     179.4          54.8                7.5 +/-    0.36       9.0 +/-    0.36  0.150 / 0.260
G11     135.6          24.8                6.8 +/-    1.56      13.3 +/-    1.56  0.250 / 0.140
G23     158.9          23.2                5.9 +/-    1.80      12.0 +/-    1.80  0.030 / 0.050
G27     43.1           21.3                4.4 +/-    2.81       9.5 +/-    2.81  0.040 / 0.040
G28     249.0          35.4                7.0 +/-    1.50      11.1 +/-    1.50  0.090 / 0.110
G30     314.4          45.7                4.3 +/-    1.02       5.8 +/-    1.02  0.080 / 0.120