PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-20:58:00
G10     301.5          53.8               10.5 +/-    1.57      12.7 +/-    1.57  0.060 / 0.080
G14     210.6          10.7               -8.1 +/-   17.77     -22.3 +/-   17.77  0.060 / 0.100
G15     45.9           26.9                8.2 +/-    1.71      15.4 +/-    1.71  0.050 / 0.050
G20     359.0          65.0               11.0 +/-    0.98      12.0 +/-    0.98  0.040 / 0.040
G21     99.0           73.9               11.6 +/-    0.76      12.0 +/-    0.76  0.210 / 0.660
G24     97.7           27.3               12.8 +/-    1.02      23.7 +/-    1.02  0.090 / 0.090
G27     299.4          34.9               10.8 +/-    1.00      17.2 +/-    1.00  0.060 / 0.090
G32     210.6          33.8               13.9 +/-    0.87      22.6 +/-    0.87  0.060 / 0.120