PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-20:27:20
G02     33.2           55.3                8.5 +/-    0.68      10.0 +/-    0.68  0.030 / 0.050
G05     135.4          63.8               10.2 +/-    1.02      11.2 +/-    1.02  0.040 / 0.050
G06     55.4           12.7                6.3 +/-    1.52      16.5 +/-    1.52  0.030 / 0.040
G12     190.1          63.0                8.9 +/-    1.16       9.8 +/-    1.16  0.030 / 0.050
G19     100.6          11.0                9.3 +/-    1.43      25.5 +/-    1.43  0.040 / 0.060
G25     293.3          55.1                6.7 +/-    0.68       8.0 +/-    0.68  0.040 / 0.050
G29     308.1          28.3                5.9 +/-    1.20      10.8 +/-    1.20  0.050 / 0.050