PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/23-19:27:50
G08     306.2          20.3                7.6 +/-    1.14      16.6 +/-    1.14  0.080 / 0.090
G10     345.9          61.7                7.3 +/-    0.65       8.1 +/-    0.65  0.090 / 0.080
G14     220.4          31.6                4.7 +/-    1.99       8.0 +/-    1.99  0.040 / 0.050
G20     49.8           56.8                9.0 +/-    1.05      10.5 +/-    1.05  0.040 / 0.050
G21     138.9          52.7               10.9 +/-    0.69      13.3 +/-    0.69  0.080 / 0.100
G24     69.9           30.2                8.8 +/-    1.22      15.4 +/-    1.22  0.080 / 0.090
G27     268.6          36.9                9.0 +/-    2.07      13.8 +/-    2.07  0.100 / 0.180
G32     227.3          58.3               10.0 +/-    1.64      11.6 +/-    1.64  0.110 / 0.150