PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/26-09:57:10
G02     35.1           53.4                5.3 +/-    0.26       6.4 +/-    0.26  0.130 / 0.230
G05     137.5          63.7                8.2 +/-    1.05       9.0 +/-    1.05  0.130 / 0.340
G06     54.2           15.9                3.2 +/-    1.31       7.9 +/-    1.31  0.040 / 0.040
G12     198.1          66.2                5.6 +/-    0.94       6.1 +/-    0.94  0.030 / 0.050
G25     285.6          59.3                4.7 +/-    1.40       5.3 +/-    1.40  0.040 / 0.040
G29     309.9          31.4                3.4 +/-    1.50       5.9 +/-    1.50  0.040 / 0.050