PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-18:58:00
G02     30.5           57.4                8.5 +/-    0.35       9.8 +/-    0.35  0.030 / 0.050
G05     139.9          62.2               10.6 +/-    0.43      11.9 +/-    0.43  0.030 / 0.050
G06     54.5           13.8                7.3 +/-    1.89      18.6 +/-    1.89  0.030 / 0.050
G12     189.6          64.4               10.4 +/-    1.02      11.4 +/-    1.02  0.030 / 0.040
G19     99.0           12.5                9.7 +/-    2.45      25.6 +/-    2.45  0.050 / 0.060
G25     295.8          54.3                8.6 +/-    0.56      10.4 +/-    0.56  0.050 / 0.060
G29     306.7          26.8                7.2 +/-    1.43      13.5 +/-    1.43  0.110 / 0.210