PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-12:28:10
G02     201.7          22.4                5.4 +/-    2.45      11.3 +/-    2.45  0.050 / 0.040
G06     166.4          59.0                9.1 +/-    0.35      10.5 +/-    0.35  0.040 / 0.040
G13     223.0          10.7                5.6 +/-    2.21      15.3 +/-    2.21  0.080 / 0.130
G17     23.2           58.5                6.3 +/-    1.05       7.2 +/-    1.05  0.080 / 0.120
G19     341.4          69.9                5.6 +/-    0.64       6.0 +/-    0.64  0.040 / 0.040
G24     307.5          31.3                5.3 +/-    1.09       9.0 +/-    1.09  0.040 / 0.030
G28     87.5           43.2                7.0 +/-    1.05       9.7 +/-    1.05  0.050 / 0.030
G30     157.9          11.9                6.0 +/-    1.51      16.0 +/-    1.51  0.050 / 0.040