PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-15:28:00
G02     245.6          74.6               10.0 +/-    0.74      10.4 +/-    0.74  0.110 / 0.120
G05     171.8          17.2               13.8 +/-    1.45      32.6 +/-    1.45  0.110 / 0.110
G06     40.0           55.1                9.0 +/-    0.45      10.8 +/-    0.45  0.060 / 0.060
G12     321.3          54.1                8.7 +/-    1.35      10.5 +/-    1.35  0.040 / 0.060
G17     70.8           23.4                8.3 +/-    0.72      16.8 +/-    0.72  0.200 / 0.280
G19     60.1           35.6                8.1 +/-    1.00      12.7 +/-    1.00  0.120 / 0.290
G24     244.0          33.3               12.6 +/-    1.30      20.7 +/-    1.30  0.060 / 0.050
G25     316.6          13.2                7.3 +/-    1.21      19.0 +/-    1.21  0.050 / 0.050