PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/29-17:57:30
G10     293.4          51.4               10.5 +/-    2.19      13.0 +/-    2.19  0.050 / 0.100
G15     46.5           29.8                8.8 +/-    1.35      15.5 +/-    1.35  0.060 / 0.100
G20     348.6          65.4               10.5 +/-    0.75      11.5 +/-    0.75  0.230 / 0.280
G21     80.4           76.1               11.7 +/-    0.85      12.0 +/-    0.85  0.280 / 0.330
G24     103.8          25.0               13.2 +/-    1.50      25.7 +/-    1.50  0.090 / 0.150
G27     304.9          32.5                7.7 +/-    2.27      12.8 +/-    2.27  0.090 / 0.150
G29     168.2          12.1               13.0 +/-    1.57      34.7 +/-    1.57  0.040 / 0.040
G32     208.2          29.1               14.7 +/-    2.12      26.2 +/-    2.12  0.050 / 0.040