PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-13:12:50
G10     243.6          21.2                5.9 +/-    2.51      12.7 +/-    2.51  0.040 / 0.050
G13     62.1           33.5                6.8 +/-    1.34      11.0 +/-    1.34  0.040 / 0.040
G15     105.8          57.5                8.8 +/-    0.96      10.2 +/-    0.96  0.100 / 0.460
G16     306.1          14.2                3.5 +/-    3.25       9.0 +/-    3.25  0.090 / 0.410
G20     259.4          45.1                8.5 +/-    2.69      11.5 +/-    2.69  0.160 / 0.220
G21     329.0          57.1                4.6 +/-    0.59       5.3 +/-    0.59  0.100 / 0.190
G26     279.7          17.7                6.0 +/-    1.06      13.9 +/-    1.06  0.080 / 0.090
G29     159.7          57.7               10.5 +/-    0.80      12.1 +/-    0.80  0.070 / 0.110