PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-16:28:00
G02     43.6           46.0                6.6 +/-    0.43       8.7 +/-    0.43  0.070 / 0.060
G05     107.8          70.2                8.7 +/-    0.73       9.2 +/-    0.73  0.050 / 0.060
G12     187.6          51.8               10.4 +/-    1.76      12.9 +/-    1.76  0.030 / 0.070
G25     271.9          58.1                9.3 +/-    0.55      10.7 +/-    0.55  0.040 / 0.060
G29     316.6          38.5                6.7 +/-    0.79      10.0 +/-    0.79  0.020 / 0.030