PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-21:58:00
G01     318.9          18.6                7.7 +/-    1.21      17.5 +/-    1.21  0.040 / 0.030
G08     254.9          12.8               10.7 +/-    1.76      28.1 +/-    1.76  0.040 / 0.040
G10     81.2           52.3                8.7 +/-    1.06      10.7 +/-    1.06  0.060 / 0.160
G11     301.4          24.1                7.5 +/-    1.73      14.9 +/-    1.73  0.070 / 0.150
G14     299.1          70.9                7.7 +/-    0.63       8.1 +/-    0.63  0.130 / 0.190
G18     302.7          42.6                7.9 +/-    2.24      11.0 +/-    2.24  0.130 / 0.240
G20     106.0          28.5               11.2 +/-    1.26      20.3 +/-    1.26  0.120 / 0.260
G31     176.7          41.9               11.1 +/-    0.86      15.7 +/-    0.86  0.160 / 0.260
G32     9.7            66.8                7.1 +/-    0.70       7.7 +/-    0.70  0.040 / 0.070