PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-18:57:40
G03     213.8          61.2                9.4 +/-    1.18      10.5 +/-    1.18  0.040 / 0.060
G07     253.1          11.7                3.5 +/-   21.54       9.4 +/-   21.54  0.040 / 0.050
G09     307.4          23.1                9.3 +/-    2.55      19.0 +/-    2.55  0.180 / 0.360
G14     105.5          10.7               12.3 +/-    3.29      33.8 +/-    3.29  0.210 / 0.410
G16     110.2          63.7               12.6 +/-    1.06      13.9 +/-    1.06  0.030 / 0.040
G22     188.7          45.9               10.6 +/-    1.88      14.1 +/-    1.88  0.030 / 0.030
G23     327.4          57.0               10.0 +/-    0.65      11.6 +/-    0.65  0.060 / 0.190
G26     58.1           46.5                9.7 +/-    0.66      12.8 +/-    0.66  0.050 / 0.220
G31     56.7           13.1                7.5 +/-    0.97      19.4 +/-    0.97  0.040 / 0.040