PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-20:28:00
G02     337.4          78.9                7.7 +/-    0.37       7.8 +/-    0.37  0.020 / 0.030
G05     164.0          33.8               10.1 +/-    1.22      16.4 +/-    1.22  0.020 / 0.030
G06     42.0           38.5                7.8 +/-    1.52      11.6 +/-    1.52  0.050 / 0.110
G12     309.4          74.4                7.1 +/-    0.41       7.3 +/-    0.41  0.050 / 0.100
G17     86.1           11.7                8.9 +/-    3.20      24.0 +/-    3.20  0.130 / 0.130
G19     73.7           29.4                9.5 +/-    1.10      16.8 +/-    1.10  0.210 / 0.150
G24     227.2          22.3               12.5 +/-    1.43      26.1 +/-    1.43  0.050 / 0.050
G25     317.2          29.1                8.0 +/-    1.62      14.3 +/-    1.62  0.080 / 0.060