PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-21:43:00
G02     88.9           10.8                8.9 +/-    1.41      24.4 +/-    1.41  0.060 / 0.110
G05     45.9           25.9                7.4 +/-    1.74      14.2 +/-    1.74  0.060 / 0.130
G13     88.8           35.5               10.6 +/-    1.11      16.7 +/-    1.11  0.050 / 0.090
G15     141.9          43.6               13.8 +/-    0.70      19.0 +/-    0.70  0.050 / 0.100
G20     235.6          1.3                 6.9 +/-    1.81      21.5 +/-    1.81  0.220 / 0.480
G21     303.1          39.6                9.8 +/-    1.24      14.4 +/-    1.24  0.150 / 0.410
G25     204.0          18.8               10.9 +/-    3.08      24.7 +/-    3.08  0.080 / 0.120
G26     296.3          20.9               11.0 +/-    1.51      23.8 +/-    1.51  0.080 / 0.140
G29     133.4          85.3                9.4 +/-    0.75       9.4 +/-    0.75  0.030 / 0.040