PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-01:42:40
G10     246.7          23.3               12.6 +/-    1.24      25.5 +/-    1.24  0.120 / 0.280
G13     58.1           32.3                8.1 +/-    2.06      13.6 +/-    2.06  0.130 / 0.340
G15     99.0           58.4               10.7 +/-    1.02      12.4 +/-    1.02  0.030 / 0.040
G16     299.1          15.9                6.9 +/-    2.31      16.7 +/-    2.31  0.030 / 0.040
G20     260.8          43.0               10.0 +/-    3.24      13.9 +/-    3.24  0.060 / 0.110
G21     327.3          56.3                8.4 +/-    0.59       9.9 +/-    0.59  0.050 / 0.140
G26     270.8          17.4               10.0 +/-    2.11      23.5 +/-    2.11  0.030 / 0.030
G29     163.9          56.3               10.5 +/-    0.43      12.4 +/-    0.43  0.030 / 0.030