PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-05:58:00
G03     189.8          17.6                5.4 +/-    2.73      12.5 +/-    2.73  0.030 / 0.080
G07     296.6          42.3                6.2 +/-    1.20       8.7 +/-    1.20  0.060 / 0.080
G08     140.7          30.7                5.8 +/-    1.50       9.9 +/-    1.50  0.050 / 0.080
G09     319.6          68.8                5.1 +/-    1.43       5.4 +/-    1.43  0.060 / 0.080
G16     42.3           32.7                3.0 +/-    2.06       5.0 +/-    2.06  0.050 / 0.060
G23     129.4          73.2                7.2 +/-    0.78       7.5 +/-    0.78  0.030 / 0.050
G27     94.3           35.2                6.5 +/-    1.89      10.2 +/-    1.89  0.050 / 0.030
G30     277.0          14.5                4.4 +/-    1.83      11.2 +/-    1.83  0.030 / 0.030