PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/25-13:28:10
G02     46.4           43.7                3.8 +/-    1.18       5.3 +/-    1.18  0.030 / 0.020
G05     106.5          69.8                5.0 +/-    0.61       5.3 +/-    0.61  0.030 / 0.020
G06     60.8           9.6                 3.1 +/-    2.13       8.8 +/-    2.13  0.060 / 0.100
G12     191.6          53.3                6.4 +/-    0.82       7.7 +/-    0.82  0.080 / 0.090
G20     201.8          38.9                5.0 +/-    1.01       7.4 +/-    1.01  0.040 / 0.040
G25     269.6          58.7                6.9 +/-    3.69       7.9 +/-    3.69  0.030 / 0.040
G29     319.9          43.4                3.3 +/-    0.63       4.5 +/-    0.63  0.050 / 0.040