PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-23:57:50
G08     310.9          17.4                7.3 +/-    1.62      17.1 +/-    1.62  0.060 / 0.180
G10     341.3          61.3                6.8 +/-    0.61       7.7 +/-    0.61  0.060 / 0.200
G14     219.3          32.1               12.3 +/-    3.20      20.7 +/-    3.20  0.090 / 0.100
G20     43.6           58.9                9.6 +/-    0.53      11.0 +/-    0.53  0.090 / 0.080
G21     137.3          55.1               11.0 +/-    0.95      13.0 +/-    0.95  0.040 / 0.030
G24     71.5           30.1                8.9 +/-    0.48      15.5 +/-    0.48  0.030 / 0.030
G27     271.6          37.2               10.4 +/-    1.36      15.9 +/-    1.36  0.040 / 0.050
G32     225.3          54.9               12.5 +/-    1.26      14.9 +/-    1.26  0.040 / 0.050