PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-20:12:30
G02     28.3           59.1                9.5 +/-    0.43      10.9 +/-    0.43  0.030 / 0.040
G05     143.8          59.7               12.4 +/-    0.94      14.1 +/-    0.94  0.040 / 0.050
G06     52.8           16.3                7.2 +/-    0.68      17.3 +/-    0.68  0.020 / 0.050
G12     194.1          68.5                9.2 +/-    0.86       9.8 +/-    0.86  0.040 / 0.050
G19     96.7           14.0               10.3 +/-    2.24      26.2 +/-    2.24  0.040 / 0.060
G25     300.4          52.0                9.3 +/-    1.18      11.4 +/-    1.18  0.040 / 0.080
G29     304.7          24.7                9.5 +/-    1.78      18.7 +/-    1.78  0.040 / 0.050