PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/29-19:13:00
G02     58.4           34.8                8.3 +/-    0.72      13.2 +/-    0.72  0.030 / 0.040
G05     58.0           61.4               10.2 +/-    0.72      11.4 +/-    0.72  0.030 / 0.040
G12     181.0          28.1               13.1 +/-    0.97      23.9 +/-    0.97  0.140 / 0.370
G13     127.3          15.6               13.3 +/-    2.43      32.6 +/-    2.43  0.090 / 0.290
G15     166.5          10.9               -0.3 +/-   34.30      -0.7 +/-   34.30  0.090 / 0.110
G21     271.4          16.6               11.7 +/-    2.95      28.0 +/-    2.95  0.060 / 0.120
G25     234.0          51.4               10.8 +/-    2.27      13.4 +/-    2.27  0.110 / 0.290
G29     327.6          53.7                8.1 +/-    0.73       9.8 +/-    0.73  0.100 / 0.230