PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-18:58:00
G10     306.6          55.3               11.8 +/-    1.07      14.0 +/-    1.07  0.070 / 0.080
G14     211.6          12.4               12.7 +/-    3.59      33.6 +/-    3.59  0.060 / 0.090
G15     45.5           22.6               10.6 +/-    0.71      21.8 +/-    0.71  0.120 / 0.560
G20     8.4            64.4               11.2 +/-    0.41      12.3 +/-    0.41  0.100 / 0.490
G21     108.4          71.4               14.2 +/-    0.67      14.9 +/-    0.67  0.070 / 0.120
G24     94.5           28.4               12.0 +/-    0.94      21.8 +/-    0.94  0.090 / 0.140
G27     295.7          36.2               13.6 +/-    1.08      21.2 +/-    1.08  0.050 / 0.050
G32     211.8          37.5               13.1 +/-    0.93      19.9 +/-    0.93  0.040 / 0.040