PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-16:57:50
G01     278.9          41.3               12.6 +/-    2.56      18.0 +/-    2.56  0.040 / 0.070
G03     315.0          27.3                8.8 +/-    2.01      16.4 +/-    2.01  0.040 / 0.050
G10     126.2          22.0               10.5 +/-    1.61      21.9 +/-    1.61  0.020 / 0.020
G11     258.9          22.8                9.0 +/-    2.82      18.6 +/-    2.82  0.020 / 0.020
G14     34.5           54.5                7.5 +/-    1.88       8.9 +/-    1.88  0.040 / 0.060
G22     314.8          47.8                9.2 +/-    1.32      11.9 +/-    1.32  0.040 / 0.050
G25     58.4           18.5                9.1 +/-    1.14      20.9 +/-    1.14  0.070 / 0.130
G26     151.1          20.5               10.3 +/-    3.35      22.4 +/-    3.35  0.080 / 0.130
G31     72.7           77.9               10.0 +/-    0.66      10.2 +/-    0.66  0.100 / 0.160
G32     59.6           35.6                9.8 +/-    1.76      15.3 +/-    1.76  0.100 / 0.110