PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-14:57:40
G03     212.6          59.4               13.5 +/-    0.43      15.4 +/-    0.43  0.120 / 0.550
G07     254.9          13.1               10.3 +/-    2.87      26.7 +/-    2.87  0.100 / 0.570
G09     308.9          25.6               10.6 +/-    1.52      20.4 +/-    1.52  0.040 / 0.050
G14     106.7          11.0                7.8 +/-    2.24      21.2 +/-    2.24  0.030 / 0.060
G16     99.5           63.9               11.5 +/-    0.65      12.6 +/-    0.65  0.110 / 0.360
G22     184.5          40.5               13.6 +/-    1.72      19.6 +/-    1.72  0.130 / 0.310
G23     333.6          61.8               10.7 +/-    0.56      11.9 +/-    0.56  0.040 / 0.040
G26     54.8           43.7               10.1 +/-    0.94      13.8 +/-    0.94  0.040 / 0.050
G31     58.5           10.4                7.9 +/-    2.71      22.0 +/-    2.71  0.040 / 0.050