PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/13-18:12:40
G01     220.7          11.9                9.5 +/-    4.55      25.5 +/-    4.55  0.050 / 0.030
G03     259.1          71.2                9.7 +/-    0.85      10.2 +/-    0.85  0.050 / 0.040
G09     298.5          12.4                6.8 +/-   16.77      17.9 +/-   16.77  0.040 / 0.050
G14     93.3           18.7               12.2 +/-    1.95      27.8 +/-    1.95  0.040 / 0.050
G16     144.6          50.2               12.4 +/-    0.58      15.6 +/-    0.58  0.160 / 0.360
G22     199.9          62.6               11.9 +/-    0.64      13.2 +/-    0.64  0.150 / 0.300
G23     312.0          41.4               10.2 +/-    0.77      14.5 +/-    0.77  0.300 / 0.450
G26     92.8           57.0               11.2 +/-    1.26      13.1 +/-    1.26  0.390 / 0.290
G31     47.4           29.2                8.9 +/-    1.19      15.9 +/-    1.19  0.110 / 0.250