PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-18:57:30
G01     228.0          18.5               11.6 +/-    2.03      26.4 +/-    2.03  0.110 / 0.240
G03     287.3          68.7                9.8 +/-    0.74      10.4 +/-    0.74  0.110 / 0.190
G14     84.3           26.6               10.4 +/-    1.52      19.6 +/-    1.52  0.030 / 0.040
G16     149.7          42.7               12.4 +/-    0.86      17.4 +/-    0.86  0.030 / 0.040
G22     217.9          72.0               12.5 +/-    0.61      13.1 +/-    0.61  0.050 / 0.060
G23     306.4          36.8                8.8 +/-    0.78      13.5 +/-    0.78  0.040 / 0.090
G26     100.8          53.8               10.9 +/-    0.48      13.1 +/-    0.48  0.100 / 0.380
G31     44.5           33.7                7.9 +/-    0.79      12.9 +/-    0.79  0.110 / 0.340