PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-21:42:30
G02     34.5           54.3                9.6 +/-    0.72      11.6 +/-    0.72  0.030 / 0.030
G05     133.1          64.4               11.7 +/-    0.58      12.8 +/-    0.58  0.040 / 0.040
G06     55.7           12.5                7.3 +/-    1.84      19.2 +/-    1.84  0.030 / 0.030
G12     191.1          62.9               11.6 +/-    0.64      12.9 +/-    0.64  0.030 / 0.040
G19     101.3          10.3               10.6 +/-    1.28      29.3 +/-    1.28  0.120 / 0.150
G25     292.7          55.1                8.8 +/-    2.24      10.5 +/-    2.24  0.150 / 0.170
G29     308.6          28.8                8.8 +/-    1.38      15.9 +/-    1.38  0.040 / 0.050