PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-21:57:50
G03     186.7          13.2                9.5 +/-    3.23      24.8 +/-    3.23  0.060 / 0.090
G07     297.5          41.3                8.0 +/-    0.78      11.3 +/-    0.78  0.060 / 0.110
G08     137.9          33.5               12.8 +/-    0.64      21.0 +/-    0.64  0.060 / 0.080
G09     317.3          69.1                6.2 +/-    0.43       6.6 +/-    0.43  0.060 / 0.080
G16     41.7           33.1                6.2 +/-    0.49      10.1 +/-    0.49  0.060 / 0.120
G23     133.6          71.4                9.5 +/-    0.52      10.0 +/-    0.52  0.050 / 0.120
G27     89.2           36.0                9.2 +/-    0.94      14.4 +/-    0.94  0.030 / 0.050
G30     280.9          20.4                8.2 +/-    1.49      17.8 +/-    1.49  0.020 / 0.040