PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-17:27:50
G01     258.1          38.0               10.6 +/-    1.78      15.9 +/-    1.78  0.080 / 0.160
G03     316.6          41.4               11.0 +/-    1.15      15.7 +/-    1.15  0.080 / 0.190
G11     244.6          15.8               10.0 +/-    1.68      24.4 +/-    1.68  0.030 / 0.030
G14     53.0           45.4                8.7 +/-    1.13      11.7 +/-    1.13  0.030 / 0.040
G22     309.8          62.4                9.9 +/-    0.67      11.0 +/-    0.67  0.040 / 0.040
G23     282.9          17.1               -0.2 +/-   10.33      -0.4 +/-   10.33  0.030 / 0.040
G25     44.5           13.5                7.5 +/-    1.21      19.3 +/-    1.21  0.060 / 0.110
G26     140.6          33.4               14.7 +/-    0.88      24.0 +/-    0.88  0.050 / 0.100
G31     43.1           63.7                8.5 +/-    0.75       9.3 +/-    0.75  0.130 / 0.290
G32     72.9           25.8                8.5 +/-    0.81      16.3 +/-    0.81  0.120 / 0.220