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               13.7 +/-    0.85      15.6 +/-    0.85  0.040 / 0.040
G07     254.9          13.1               11.9 +/-    2.40      31.0 +/-    2.40  0.040 / 0.030
G09     308.9          25.6               10.3 +/-    1.31      19.8 +/-    1.31  0.160 / 0.260
G14     106.7          11.0                9.2 +/-    1.55      25.1 +/-    1.55  0.150 / 0.350
G16     99.5           63.9               12.0 +/-    0.58      13.2 +/-    0.58  0.030 / 0.040
G22     184.5          40.5               13.4 +/-    1.04      19.3 +/-    1.04  0.030 / 0.040
G23     333.6          61.8               11.2 +/-    0.50      12.5 +/-    0.50  0.140 / 0.210
G26     54.8           43.7               10.5 +/-    0.86      14.5 +/-    0.86  0.100 / 0.230
G31     58.5           10.4                9.8 +/-    4.37      27.2 +/-    4.37  0.080 / 0.070