PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-20:58:00
G02     71.8           23.7               14.9 +/-    0.98      30.0 +/-    0.98  0.130 / 0.150
G05     46.7           51.5               15.0 +/-    0.95      18.6 +/-    0.95  0.150 / 0.240
G12     181.6          16.0               22.5 +/-    2.09      54.7 +/-    2.09  0.060 / 0.120
G13     116.2          25.9               19.0 +/-    1.09      36.3 +/-    1.09  0.070 / 0.110
G15     155.7          24.7               21.9 +/-    1.68      43.1 +/-    1.68  0.080 / 0.210
G18     223.5          14.4               23.5 +/-    1.65      59.2 +/-    1.65  0.090 / 0.200
G20     224.4          79.0               17.5 +/-    0.85      17.8 +/-    0.85  0.030 / 0.050
G21     284.5          27.6               13.8 +/-    2.57      25.4 +/-    2.57  0.030 / 0.050
G25     214.2          36.6               19.6 +/-    1.98      30.2 +/-    1.98  0.030 / 0.040
G29     345.0          73.7               17.3 +/-    0.66      17.9 +/-    0.66  0.030 / 0.040