PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-13:42:20
G02     205.3          34.7                6.9 +/-    1.17      11.0 +/-    1.17  0.090 / 0.110
G06     149.9          72.7                6.1 +/-    0.89       6.4 +/-    0.89  0.110 / 0.090
G12     308.7          17.9                4.0 +/-    2.81       9.2 +/-    2.81  0.040 / 0.050
G17     36.1           49.2                4.6 +/-    1.18       5.9 +/-    1.18  0.040 / 0.040
G19     11.2           62.4                5.2 +/-    0.60       5.8 +/-    0.60  0.050 / 0.030
G24     294.9          38.6                3.4 +/-    1.47       5.0 +/-    1.47  0.050 / 0.040
G28     102.0          35.0                6.5 +/-    0.79      10.2 +/-    0.79  0.030 / 0.030