PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/30-18:58:10
G10     296.1          51.6                6.3 +/-    0.56       7.8 +/-    0.56  0.060 / 0.110
G14     209.8          10.8               -6.9 +/-   18.27     -19.1 +/-   18.27  0.070 / 0.110
G15     46.8           32.0                6.2 +/-    1.00      10.4 +/-    1.00  0.040 / 0.040
G20     349.9          65.4                5.1 +/-    1.21       5.5 +/-    1.21  0.040 / 0.050
G21     95.3           73.6                8.5 +/-    0.91       8.8 +/-    0.91  0.150 / 0.380
G24     94.8           25.7                8.8 +/-    1.78      16.9 +/-    1.78  0.380 / 0.590
G27     303.1          32.6                7.2 +/-    1.05      11.9 +/-    1.05  0.070 / 0.120
G32     210.0          31.2                7.6 +/-    1.66      13.0 +/-    1.66  0.080 / 0.140