PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-22:27:40
G01     234.6          24.5               10.0 +/-    1.05      19.8 +/-    1.05  0.030 / 0.040
G03     306.0          59.7                7.3 +/-    1.19       8.4 +/-    1.19  0.030 / 0.040
G14     77.2           30.5                7.7 +/-    0.60      13.4 +/-    0.60  0.100 / 0.190
G16     157.9          32.5               12.8 +/-    1.09      21.4 +/-    1.09  0.080 / 0.210
G22     257.4          75.5                8.5 +/-    0.51       8.8 +/-    0.51  0.040 / 0.050
G23     299.0          29.4                7.5 +/-    2.37      13.4 +/-    2.37  0.040 / 0.060
G26     119.0          50.1               10.4 +/-    1.00      13.1 +/-    1.00  0.060 / 0.150
G31     41.2           43.6                6.7 +/-    1.03       9.2 +/-    1.03  0.060 / 0.100
G32     90.9           13.2                9.2 +/-    1.19      23.8 +/-    1.19  0.080 / 0.110