PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-20:42:30
G10     246.3          23.3               21.5 +/-    2.78      43.7 +/-    2.78  0.130 / 0.430
G13     58.4           32.3               12.9 +/-    1.31      21.6 +/-    1.31  0.150 / 0.430
G15     108.4          59.4               17.7 +/-    1.12      20.2 +/-    1.12  0.040 / 0.050
G16     300.1          15.7               11.9 +/-    1.91      29.0 +/-    1.91  0.030 / 0.050
G20     263.2          47.3               18.1 +/-    4.02      23.7 +/-    4.02  0.070 / 0.120
G21     327.7          56.5               15.2 +/-    0.58      17.8 +/-    0.58  0.080 / 0.110
G26     272.4          17.4               17.8 +/-    1.75      41.7 +/-    1.75  0.030 / 0.030
G29     163.3          56.5               19.0 +/-    0.70      22.3 +/-    0.70  0.030 / 0.030