PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-09:27:40
G02     235.9          75.0                7.1 +/-    0.73       7.3 +/-    0.73  0.270 / 0.480
G05     175.1          11.4               -1.8 +/-   14.15      -5.0 +/-   14.15  0.200 / 0.560
G06     41.5           60.9                5.9 +/-    0.94       6.6 +/-    0.94  0.050 / 0.040
G12     322.0          52.1                5.5 +/-    0.59       6.8 +/-    0.59  0.030 / 0.040
G17     67.9           23.8                6.1 +/-    1.27      12.3 +/-    1.27  0.260 / 0.340
G19     55.0           38.6                5.0 +/-    1.38       7.4 +/-    1.38  0.280 / 0.480
G24     250.3          36.2                7.1 +/-    1.96      11.0 +/-    1.96  0.100 / 0.110
G28     128.9          11.0                9.6 +/-    1.97      26.1 +/-    1.97  0.070 / 0.130