PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-20:12:30
G10     295.9          52.1               17.8 +/-    2.25      21.8 +/-    2.25  0.040 / 0.050
G15     46.4           29.7               14.7 +/-    1.73      25.9 +/-    1.73  0.040 / 0.040
G20     350.7          65.3               16.9 +/-    0.57      18.4 +/-    0.57  0.080 / 0.090
G21     86.2           75.7               17.4 +/-    0.81      17.9 +/-    0.81  0.150 / 0.100
G24     101.8          25.8               18.1 +/-    1.10      34.7 +/-    1.10  0.050 / 0.090
G27     303.2          33.3               16.5 +/-    2.36      27.0 +/-    2.36  0.050 / 0.100
G29     168.0          10.2               26.2 +/-    1.87      72.7 +/-    1.87  0.080 / 0.060
G32     209.1          30.4               24.5 +/-    2.30      42.7 +/-    2.30  0.070 / 0.060