PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-10:42:30
G02     34.8           53.7                2.8 +/-    0.28       3.4 +/-    0.28  0.030 / 0.040
G05     138.6          63.6                4.9 +/-    1.00       5.4 +/-    1.00  0.040 / 0.040
G06     54.4           15.5                2.4 +/-    1.44       5.8 +/-    1.44  0.130 / 0.300
G12     197.4          66.0                3.6 +/-    1.04       3.9 +/-    1.04  0.130 / 0.350
G19     101.0          10.0                3.1 +/-    2.23       8.7 +/-    2.23  0.040 / 0.050
G25     284.5          59.8               22.0 +/-    0.71      25.0 +/-    0.71  0.040 / 0.050
G29     309.7          31.0                3.4 +/-    1.47       5.8 +/-    1.47  0.030 / 0.030