PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-22:43:10
G05     46.4           24.1                7.1 +/-    1.02      14.2 +/-    1.02  0.060 / 0.120
G13     86.7           35.9                9.1 +/-    0.91      14.2 +/-    0.91  0.050 / 0.120
G15     139.4          45.3               11.3 +/-    0.66      15.2 +/-    0.66  0.130 / 0.440
G20     237.4          9.4                 5.8 +/-    1.78      16.3 +/-    1.78  0.120 / 0.310
G21     304.6          40.7               10.0 +/-    1.21      14.4 +/-    1.21  0.050 / 0.130
G25     203.3          17.5               10.6 +/-    3.34      24.8 +/-    3.34  0.050 / 0.090
G26     294.7          21.0               10.0 +/-    2.55      21.5 +/-    2.55  0.050 / 0.030
G29     142.0          83.4                8.9 +/-    1.47       8.9 +/-    1.47  0.030 / 0.020