PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-14:43:10
G03     219.4          63.4               10.9 +/-    1.25      12.1 +/-    1.25  0.050 / 0.080
G09     306.6          22.1                8.8 +/-    3.27      18.3 +/-    3.27  0.050 / 0.060
G14     103.3          13.9                8.1 +/-    2.30      20.6 +/-    2.30  0.120 / 0.320
G16     110.8          62.6                9.2 +/-    0.55      10.2 +/-    0.55  0.130 / 0.310
G22     185.7          45.1               10.9 +/-    0.78      14.6 +/-    0.78  0.050 / 0.040
G23     329.1          58.1                8.8 +/-    0.54      10.2 +/-    0.54  0.050 / 0.050
G26     59.3           46.8                7.5 +/-    0.75       9.8 +/-    0.75  0.060 / 0.040
G31     56.0           13.5                5.8 +/-    3.07      15.1 +/-    3.07  0.050 / 0.040