PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-14:12:30
G02     42.8           47.0                5.3 +/-    0.38       6.9 +/-    0.38  0.020 / 0.040
G05     121.0          68.5                7.2 +/-    0.72       7.7 +/-    0.72  0.030 / 0.040
G06     58.5           11.8                5.9 +/-    2.43      15.8 +/-    2.43  0.090 / 0.110
G12     193.5          57.8                8.0 +/-    1.26       9.2 +/-    1.26  0.090 / 0.130
G20     200.6          35.1                8.8 +/-    1.06      14.0 +/-    1.06  0.030 / 0.040
G25     277.7          58.5                7.4 +/-    0.70       8.5 +/-    0.70  0.030 / 0.040
G29     317.4          40.7                6.1 +/-    0.85       8.8 +/-    0.85  0.040 / 0.050