PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-18:12:40
G02     64.8           28.5               14.0 +/-    1.95      25.4 +/-    1.95  0.080 / 0.110
G05     52.9           59.2               14.3 +/-    0.79      16.3 +/-    0.79  0.130 / 0.100
G12     184.3          26.2               16.4 +/-    2.09      31.2 +/-    2.09  0.300 / 0.240
G13     124.7          19.5               19.3 +/-    1.84      43.0 +/-    1.84  0.250 / 0.260
G15     160.1          17.1               19.8 +/-    1.85      46.8 +/-    1.85  0.100 / 0.140
G20     212.1          67.4               15.3 +/-    0.73      16.5 +/-    0.73  0.100 / 0.150
G21     277.0          22.8               14.6 +/-    2.06      30.0 +/-    2.06  0.040 / 0.030
G25     224.6          46.0               16.8 +/-    2.03      22.4 +/-    2.03  0.030 / 0.040
G29     337.8          65.3               15.5 +/-    0.69      16.8 +/-    0.69  0.030 / 0.040