PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/30-21:12:50
G01     243.5          31.1               11.4 +/-    2.06      19.5 +/-    2.06  0.030 / 0.030
G03     313.5          51.2                8.6 +/-    0.70      10.7 +/-    0.70  0.030 / 0.030
G14     67.5           36.6                8.5 +/-    1.51      13.0 +/-    1.51  0.060 / 0.110
G16     162.0          23.4               12.0 +/-    0.67      24.4 +/-    0.67  0.080 / 0.130
G22     291.9          71.6               10.6 +/-    0.69      11.1 +/-    0.69  0.080 / 0.150
G23     291.9          23.5                9.7 +/-    1.64      19.7 +/-    1.64  0.100 / 0.160
G26     130.7          43.4               11.5 +/-    0.77      15.9 +/-    0.77  0.030 / 0.040
G31     39.9           52.5                8.5 +/-    0.64      10.4 +/-    0.64  0.050 / 0.050
G32     83.2           18.9                7.6 +/-    2.21      17.1 +/-    2.21  0.100 / 0.190