PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-17:28:00
G08     305.8          20.8                9.9 +/-    3.76      21.3 +/-    3.76  0.070 / 0.070
G10     344.9          61.6                9.2 +/-    1.30      10.3 +/-    1.30  0.100 / 0.090
G14     220.1          29.8               12.3 +/-    1.80      21.5 +/-    1.80  0.090 / 0.180
G20     50.0           56.5               10.0 +/-    0.86      11.7 +/-    0.86  0.160 / 0.180
G21     138.4          52.6               11.5 +/-    2.14      14.0 +/-    2.14  0.190 / 0.250
G24     70.5           30.2                8.4 +/-    1.95      14.7 +/-    1.95  0.170 / 0.270
G27     269.2          37.1               10.4 +/-    2.77      15.9 +/-    2.77  0.040 / 0.050
G32     226.7          58.2                9.9 +/-    2.59      11.4 +/-    2.59  0.040 / 0.050