PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-14:28:00
G03     200.1          43.8               11.7 +/-    1.41      16.1 +/-    1.41  0.040 / 0.040
G07     267.7          22.9                8.3 +/-    2.19      17.0 +/-    2.19  0.030 / 0.040
G09     316.2          39.3                8.9 +/-    1.32      13.1 +/-    1.32  0.030 / 0.050
G16     62.0           58.5               10.8 +/-    0.63      12.4 +/-    0.63  0.030 / 0.050
G22     181.2          25.1               10.9 +/-    1.91      21.2 +/-    1.91  0.050 / 0.110
G23     359.4          75.1               11.0 +/-    0.39      11.4 +/-    0.39  0.070 / 0.100
G26     45.2           30.4                9.3 +/-    0.84      16.2 +/-    0.84  0.080 / 0.170
G27     123.5          19.8               13.9 +/-    0.83      30.7 +/-    0.83  0.050 / 0.190