PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-20:12:50
G10     271.5          42.0               13.0 +/-    1.30      18.3 +/-    1.30  0.040 / 0.040
G13     40.0           14.4                7.4 +/-    3.52      18.6 +/-    3.52  0.040 / 0.040
G15     55.8           46.3               10.5 +/-    0.99      13.9 +/-    0.99  0.160 / 0.400
G16     275.3          11.4                8.5 +/-   13.86      23.0 +/-   13.86  0.110 / 0.380
G20     307.0          62.3               11.4 +/-    0.93      12.7 +/-    0.93  0.040 / 0.050
G21     10.3           73.4               11.8 +/-    0.76      12.3 +/-    0.76  0.040 / 0.060
G24     119.1          16.2               13.0 +/-    1.31      31.3 +/-    1.31  0.170 / 0.380
G27     317.3          21.3                8.9 +/-    2.50      19.0 +/-    2.50  0.160 / 0.460
G29     167.7          28.2               14.9 +/-    1.30      27.1 +/-    1.30  0.280 / 0.230
G32     204.4          12.5               18.3 +/-    1.64      48.2 +/-    1.64  0.180 / 0.220