PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-21:42:10
G02     35.4           52.9               10.1 +/-    0.99      12.3 +/-    0.99  0.050 / 0.050
G05     131.1          64.8               11.9 +/-    0.65      13.0 +/-    0.65  0.040 / 0.060
G06     55.0           13.7                7.5 +/-    2.73      19.2 +/-    2.73  0.050 / 0.040
G12     198.7          66.1               10.4 +/-    0.52      11.3 +/-    0.52  0.050 / 0.050
G25     292.5          54.9                9.6 +/-    1.73      11.4 +/-    1.73  0.030 / 0.040
G29     310.2          31.7                9.6 +/-    1.20      16.2 +/-    1.20  0.020 / 0.030