PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/21-19:27:50
G08     309.6          18.9                9.6 +/-    1.70      21.7 +/-    1.70  0.050 / 0.080
G10     338.3          61.0                7.7 +/-    0.90       8.6 +/-    0.90  0.050 / 0.080
G14     218.4          28.2                6.8 +/-    1.61      12.3 +/-    1.61  0.040 / 0.060
G20     43.4           58.5                7.2 +/-    0.78       8.3 +/-    0.78  0.040 / 0.060
G21     135.6          56.4                9.7 +/-    0.73      11.4 +/-    0.73  0.120 / 0.180
G24     74.2           30.6                8.0 +/-    0.59      13.8 +/-    0.59  0.110 / 0.210
G27     273.4          37.7               10.1 +/-    1.04      15.3 +/-    1.04  0.050 / 0.090
G32     223.5          54.7               11.3 +/-    1.12      13.5 +/-    1.12  0.050 / 0.110