PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-21:13:00
G10     298.0          52.1                8.7 +/-    1.70      10.7 +/-    1.70  0.040 / 0.030
G14     210.3          11.5                1.5 +/-   22.23       4.1 +/-   22.23  0.030 / 0.030
G15     46.8           32.4                7.3 +/-    1.40      12.2 +/-    1.40  0.080 / 0.080
G20     353.0          65.4                9.1 +/-    0.20       9.9 +/-    0.20  0.070 / 0.080
G21     97.6           73.7                9.6 +/-    0.56      10.0 +/-    0.56  0.130 / 0.400
G24     94.3           26.3                9.4 +/-    1.63      17.8 +/-    1.63  0.110 / 0.450
G27     301.3          33.6                7.0 +/-    2.48      11.4 +/-    2.48  0.080 / 0.120
G32     210.4          33.1               10.6 +/-    1.58      17.4 +/-    1.58  0.090 / 0.130