PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-14:57:40
G02     213.7          52.9                9.2 +/-    1.04      11.2 +/-    1.04  0.050 / 0.100
G06     70.2           76.8                7.2 +/-    0.76       7.4 +/-    0.76  0.050 / 0.080
G12     316.5          31.9                9.3 +/-    1.55      15.7 +/-    1.55  0.060 / 0.110
G17     51.3           37.7                6.4 +/-    0.60       9.6 +/-    0.60  0.080 / 0.110
G19     35.8           50.6                6.9 +/-    0.45       8.7 +/-    0.45  0.080 / 0.300
G24     272.2          41.7                8.9 +/-    1.25      12.5 +/-    1.25  0.110 / 0.280
G28     117.5          22.7                7.0 +/-    0.94      14.5 +/-    0.94  0.030 / 0.030