PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-21:27:40
G01     238.9          27.9               11.4 +/-    1.57      20.9 +/-    1.57  0.110 / 0.190
G03     310.4          55.8                8.0 +/-    1.98       9.5 +/-    1.98  0.240 / 0.150
G14     72.3           33.7                7.7 +/-    1.26      12.6 +/-    1.26  0.050 / 0.030
G16     159.8          28.1               10.3 +/-    1.59      18.7 +/-    1.59  0.040 / 0.030
G22     276.7          74.5               10.5 +/-    0.66      10.9 +/-    0.66  0.060 / 0.060
G23     295.5          26.5                7.8 +/-    2.05      14.8 +/-    2.05  0.040 / 0.050
G26     124.9          47.0               10.6 +/-    0.66      13.9 +/-    0.66  0.090 / 0.150
G31     40.4           47.7                7.1 +/-    0.77       9.2 +/-    0.77  0.100 / 0.160
G32     87.2           15.9                8.7 +/-    2.26      21.1 +/-    2.26  0.060 / 0.110