PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-20:58:00
G03     222.7          64.5               11.1 +/-    1.43      12.1 +/-    1.43  0.040 / 0.050
G09     305.8          20.8                8.7 +/-    1.55      18.7 +/-    1.55  0.040 / 0.060
G14     103.4          11.9                9.4 +/-    1.59      25.2 +/-    1.59  0.120 / 0.260
G16     120.6          62.3               12.6 +/-    0.40      14.0 +/-    0.40  0.160 / 0.320
G22     191.5          50.2               11.6 +/-    0.60      14.6 +/-    0.60  0.240 / 0.190
G23     323.6          53.4               10.1 +/-    0.77      12.3 +/-    0.77  0.160 / 0.290
G26     62.6           49.3                9.7 +/-    1.00      12.3 +/-    1.00  0.040 / 0.040
G31     54.7           16.2                8.9 +/-    3.34      21.4 +/-    3.34  0.050 / 0.040