PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/18-14:42:40
G02     33.7           54.7                7.5 +/-    0.72       8.9 +/-    0.72  0.040 / 0.040
G05     143.1          63.5                9.9 +/-    0.67      10.9 +/-    0.67  0.030 / 0.030
G06     55.7           12.9                5.3 +/-    0.68      13.8 +/-    0.68  0.030 / 0.030
G12     192.3          63.0                8.1 +/-    1.40       9.0 +/-    1.40  0.040 / 0.040
G19     101.5          10.6                7.3 +/-    1.72      20.2 +/-    1.72  0.080 / 0.130
G25     286.8          58.1                7.3 +/-    0.79       8.5 +/-    0.79  0.120 / 0.120
G29     309.6          30.3                6.9 +/-    0.74      12.1 +/-    0.74  0.030 / 0.040