PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/20-19:43:00
G10     298.1          52.2               10.1 +/-    1.30      12.4 +/-    1.30  0.060 / 0.100
G14     210.2          11.9                7.6 +/-   11.50      20.3 +/-   11.50  0.050 / 0.120
G15     46.6           31.3                8.2 +/-    0.50      14.1 +/-    0.50  0.040 / 0.040
G20     353.2          65.4                8.0 +/-    1.13       8.7 +/-    1.13  0.030 / 0.040
G21     98.9           73.1               11.1 +/-    0.70      11.5 +/-    0.70  0.100 / 0.440
G24     93.6           26.2               11.9 +/-    0.86      22.6 +/-    0.86  0.110 / 0.580
G27     301.6          33.4                9.8 +/-    1.57      16.0 +/-    1.57  0.100 / 0.160
G32     210.5          32.8                9.6 +/-    1.73      15.8 +/-    1.73  0.090 / 0.140