PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-15:42:40
G10     296.7          51.9                5.9 +/-    0.69       7.3 +/-    0.69  0.040 / 0.040
G14     209.7          11.5                1.1 +/-   24.30       3.0 +/-   24.30  0.040 / 0.050
G15     46.4           29.9                3.4 +/-    0.94       6.0 +/-    0.94  0.040 / 0.050
G20     350.8          65.4                4.0 +/-    1.08       4.3 +/-    1.08  0.040 / 0.040
G21     99.8           71.5                5.2 +/-    0.80       5.4 +/-    0.80  0.380 / 0.600
G24     93.8           25.7                7.2 +/-    0.90      13.8 +/-    0.90  0.200 / 0.440
G27     303.6          32.2                5.1 +/-    0.83       8.5 +/-    0.83  0.100 / 0.140
G32     210.3          30.2                6.8 +/-    1.23      11.8 +/-    1.23  0.100 / 0.150