PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/04-21:13:10
G10     275.6          44.1               14.4 +/-    1.02      19.7 +/-    1.02  0.060 / 0.040
G13     38.7           11.7                8.8 +/-   15.77      23.7 +/-   15.77  0.080 / 0.040
G15     53.3           44.0               13.9 +/-    1.20      19.0 +/-    1.20  0.110 / 0.340
G20     313.8          63.2               14.0 +/-    0.71      15.5 +/-    0.71  0.570 / 0.500
G21     21.0           75.2               15.3 +/-    0.58      15.7 +/-    0.58  0.030 / 0.040
G24     115.9          18.2               17.2 +/-    2.23      39.7 +/-    2.23  0.050 / 0.060
G27     315.4          23.9               12.6 +/-    1.76      25.2 +/-    1.76  0.250 / 0.270
G29     167.9          24.4               18.4 +/-    3.69      36.4 +/-    3.69  0.190 / 0.280
G32     205.1          15.5               19.5 +/-    2.08      47.9 +/-    2.08  0.050 / 0.060