PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-14:28:10
G10     252.0          28.4                5.9 +/-    2.01      10.7 +/-    2.01  0.040 / 0.030
G13     51.9           28.6                4.4 +/-    1.20       7.9 +/-    1.20  0.040 / 0.040
G15     85.1           57.9                5.7 +/-    0.76       6.6 +/-    0.76  0.070 / 0.140
G16     295.7          14.9               -2.3 +/-    1.94      -5.7 +/-    1.94  0.090 / 0.100
G20     272.2          52.0                7.2 +/-    2.57       8.9 +/-    2.57  0.070 / 0.140
G21     341.4          63.4                2.5 +/-    1.90       2.8 +/-    1.90  0.080 / 0.130
G26     269.2          14.7                3.6 +/-    2.23       8.9 +/-    2.23  0.050 / 0.040
G29     163.7          46.6                7.5 +/-    0.61       9.9 +/-    0.61  0.050 / 0.040