PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-17:12:50
G01     246.8          33.0                8.1 +/-    1.56      13.4 +/-    1.56  0.040 / 0.030
G03     314.4          51.4                7.6 +/-    0.87       9.4 +/-    0.87  0.040 / 0.030
G11     236.9          10.6                8.7 +/-    5.37      23.9 +/-    5.37  0.040 / 0.080
G14     63.3           39.8                7.8 +/-    0.82      11.4 +/-    0.82  0.050 / 0.080
G16     161.4          21.9                9.2 +/-   12.03      19.3 +/-   12.03  0.130 / 0.200
G22     295.8          71.5                7.7 +/-    0.54       8.0 +/-    0.54  0.090 / 0.180
G23     290.5          23.3                8.4 +/-    1.40      17.1 +/-    1.40  0.030 / 0.030
G26     131.3          41.6               11.4 +/-    0.93      16.1 +/-    0.93  0.040 / 0.040
G31     40.5           53.4                7.1 +/-    0.36       8.6 +/-    0.36  0.110 / 0.170
G32     81.2           19.6                7.9 +/-    1.60      17.5 +/-    1.60  0.080 / 0.160