PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/31-18:57:40
G10     298.2          52.3                7.4 +/-    2.03       9.1 +/-    2.03  0.120 / 0.540
G14     210.2          12.1                2.8 +/-   24.80       7.6 +/-   24.80  0.120 / 0.530
G15     46.5           30.7                6.7 +/-    0.88      11.6 +/-    0.88  0.030 / 0.040
G20     353.3          65.4                7.2 +/-    0.36       7.8 +/-    0.36  0.030 / 0.040
G21     99.6           72.7                9.0 +/-    0.61       9.4 +/-    0.61  0.090 / 0.120
G24     93.3           26.2                9.9 +/-    1.57      18.9 +/-    1.57  0.110 / 0.160
G27     301.7          33.2                6.0 +/-    2.48       9.9 +/-    2.48  0.060 / 0.090
G32     210.6          32.5                9.2 +/-    1.51      15.3 +/-    1.51  0.060 / 0.110