PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/08-17:42:50
G08     292.0          23.9               10.4 +/-    1.18      20.8 +/-    1.18  0.060 / 0.040
G10     7.3            62.9               11.5 +/-    0.50      12.8 +/-    0.50  0.060 / 0.040
G14     229.1          46.4               14.7 +/-    0.93      19.4 +/-    0.93  0.040 / 0.100
G20     64.5           52.5               13.5 +/-    1.07      16.5 +/-    1.07  0.050 / 0.110
G21     145.7          38.2               15.6 +/-    0.72      23.3 +/-    0.72  0.110 / 0.150
G24     53.1           22.6               13.5 +/-    0.50      27.8 +/-    0.50  0.110 / 0.120
G27     257.9          32.1               12.0 +/-    1.94      20.1 +/-    1.94  0.070 / 0.090
G32     243.8          66.5               14.0 +/-    0.86      15.2 +/-    0.86  0.060 / 0.080