PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-12:58:10
G02     205.2          36.1                8.4 +/-    1.74      13.0 +/-    1.74  0.050 / 0.140
G06     148.4          73.2                8.2 +/-    0.68       8.5 +/-    0.68  0.050 / 0.160
G12     309.0          18.6                3.7 +/-    2.33       8.4 +/-    2.33  0.030 / 0.040
G17     37.0           48.4                5.5 +/-    0.46       7.1 +/-    0.46  0.030 / 0.050
G19     12.2           62.0                6.1 +/-    0.72       6.8 +/-    0.72  0.060 / 0.090
G24     294.5          38.7                5.2 +/-    1.94       7.7 +/-    1.94  0.060 / 0.080
G28     102.4          34.9                5.9 +/-    0.60       9.3 +/-    0.60  0.080 / 0.130