PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/07-06:57:40
G02     34.3           54.1                2.9 +/-    1.13       3.5 +/-    1.13  0.020 / 0.030
G05     137.6          62.7                5.7 +/-    0.48       6.3 +/-    0.48  0.030 / 0.030
G06     52.5           19.2                1.6 +/-    2.00       3.7 +/-    2.00  0.030 / 0.030
G12     202.7          68.8                3.7 +/-    0.63       3.9 +/-    0.63  0.020 / 0.030
G19     100.0          10.0                5.8 +/-    2.23      16.1 +/-    2.23  0.110 / 0.160
G25     291.9          56.8                3.6 +/-    1.76       4.2 +/-    1.76  0.140 / 0.200
G29     309.6          31.7                2.7 +/-    1.96       4.6 +/-    1.96  0.220 / 0.330