PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/21-19:42:50
G08     321.4          10.4              -15.4 +/-   20.72     -42.7 +/-   20.72  0.110 / 0.510
G10     300.9          53.1               10.4 +/-    1.80      12.7 +/-    1.80  0.220 / 0.460
G14     210.7          13.6               11.5 +/-    2.08      29.5 +/-    2.08  0.070 / 0.090
G15     46.3           29.6                9.6 +/-    1.24      16.9 +/-    1.24  0.050 / 0.070
G20     357.7          65.2               10.2 +/-    0.69      11.2 +/-    0.69  0.030 / 0.030
G21     104.2          71.9               12.1 +/-    0.93      12.7 +/-    0.93  0.030 / 0.040
G24     91.6           26.8               11.6 +/-    2.05      21.9 +/-    2.05  0.080 / 0.120
G27     299.6          34.1                9.5 +/-    2.09      15.3 +/-    2.09  0.080 / 0.110
G32     211.3          34.6               13.2 +/-    1.66      21.1 +/-    1.66  0.220 / 0.350