PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-13:57:50
G02     42.7           46.4                5.6 +/-    1.18       7.4 +/-    1.18  0.030 / 0.030
G05     122.9          69.3                8.0 +/-    0.94       8.5 +/-    0.94  0.020 / 0.020
G12     186.7          53.9                8.1 +/-    0.69       9.7 +/-    0.69  0.040 / 0.040
G25     277.7          57.8               11.8 +/-    0.62      13.6 +/-    0.62  0.040 / 0.050
G29     314.4          35.7                5.7 +/-    1.53       8.9 +/-    1.53  0.040 / 0.040