PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-13:43:10
G03     219.9          63.2               10.8 +/-    1.12      11.9 +/-    1.12  0.140 / 0.260
G07     252.1          10.7               -3.1 +/-   17.81      -8.6 +/-   17.81  0.130 / 0.280
G09     307.0          22.9                4.7 +/-    1.94       9.6 +/-    1.94  0.040 / 0.060
G14     103.5          14.1                8.8 +/-    1.82      22.3 +/-    1.82  0.040 / 0.060
G16     108.6          62.8               11.3 +/-    0.81      12.6 +/-    0.81  0.030 / 0.060
G22     186.6          45.2               10.3 +/-    1.98      13.8 +/-    1.98  0.030 / 0.050
G23     329.5          58.5                7.7 +/-    0.58       8.8 +/-    0.58  0.030 / 0.060
G26     58.5           46.2                8.2 +/-    0.66      10.9 +/-    0.66  0.030 / 0.060
G31     56.4           12.9                6.8 +/-    1.16      17.8 +/-    1.16  0.140 / 0.360