PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-22:28:00
G02     64.8           29.0                9.5 +/-    1.35      17.1 +/-    1.35  0.030 / 0.040
G05     50.4           54.4               10.8 +/-    0.49      13.0 +/-    0.49  0.030 / 0.040
G12     181.3          22.8               18.2 +/-    1.97      37.3 +/-    1.97  0.050 / 0.070
G13     122.1          20.1               15.4 +/-    1.25      33.9 +/-    1.25  0.050 / 0.090
G15     161.6          17.0               20.0 +/-    4.06      47.5 +/-    4.06  0.130 / 0.350
G21     276.9          20.9               12.5 +/-    1.56      26.9 +/-    1.56  0.080 / 0.270
G25     226.9          46.3               14.0 +/-    1.61      18.6 +/-    1.61  0.090 / 0.170
G29     332.0          60.5               12.1 +/-    0.52      13.7 +/-    0.52  0.060 / 0.170