PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-20:27:40
G10     275.1          43.9               13.0 +/-    1.41      17.9 +/-    1.41  0.050 / 0.040
G13     38.9           12.0                9.9 +/-    2.19      26.4 +/-    2.19  0.040 / 0.030
G15     53.4           43.9               12.2 +/-    0.96      16.7 +/-    0.96  0.140 / 0.320
G20     313.5          63.2               12.6 +/-    0.75      13.9 +/-    0.75  0.560 / 0.440
G21     19.7           75.0               13.6 +/-    0.54      14.1 +/-    0.54  0.040 / 0.060
G24     116.4          17.9               14.4 +/-    1.65      33.3 +/-    1.65  0.030 / 0.050
G27     315.6          23.6               11.2 +/-    1.32      22.7 +/-    1.32  0.180 / 0.270
G29     167.9          25.0               14.5 +/-    4.13      28.3 +/-    4.13  0.250 / 0.280
G32     204.9          15.4               15.5 +/-    2.45      38.3 +/-    2.45  0.160 / 0.130