PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/24-19:27:20
G02     56.6           36.2                8.7 +/-    0.64      13.5 +/-    0.64  0.030 / 0.030
G05     61.6           63.3                8.4 +/-    0.55       9.3 +/-    0.55  0.030 / 0.030
G12     181.5          30.8               10.9 +/-    2.11      18.8 +/-    2.11  0.220 / 0.380
G13     129.2          14.0               14.5 +/-    4.64      36.9 +/-    4.64  0.150 / 0.460
G21     269.5          15.2                9.4 +/-    1.45      23.4 +/-    1.45  0.110 / 0.100
G25     237.7          53.1                9.7 +/-    5.36      11.9 +/-    5.36  0.060 / 0.110
G29     326.1          51.4                9.2 +/-    0.89      11.4 +/-    0.89  0.060 / 0.080