PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-18:27:30
G02     36.6           52.9               10.3 +/-    2.03      12.5 +/-    2.03  0.040 / 0.040
G05     142.1          64.5                9.8 +/-    0.38      10.7 +/-    0.38  0.040 / 0.040
G06     56.6           12.8                6.5 +/-    1.18      16.9 +/-    1.18  0.030 / 0.040
G12     194.8          62.2                9.2 +/-    0.67      10.2 +/-    0.67  0.030 / 0.040
G20     198.8          31.9                9.8 +/-    1.68      16.5 +/-    1.68  0.030 / 0.030
G25     283.8          58.7               11.5 +/-    1.90      13.2 +/-    1.90  0.030 / 0.030
G29     312.5          34.7                8.4 +/-    1.68      13.4 +/-    1.68  0.120 / 0.200