PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/09-14:43:00
G02     43.8           45.6                7.5 +/-    0.85      10.0 +/-    0.85  0.040 / 0.030
G05     115.6          70.1                9.0 +/-    0.65       9.5 +/-    0.65  0.040 / 0.030
G12     186.7          52.3                9.5 +/-    2.06      11.6 +/-    2.06  0.040 / 0.050
G25     274.1          58.0                8.8 +/-    1.12      10.2 +/-    1.12  0.040 / 0.050
G29     315.6          37.2                7.5 +/-    0.81      11.5 +/-    0.81  0.050 / 0.090