PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-19:58:10
G10     277.2          44.9               13.3 +/-    0.96      18.0 +/-    0.96  0.050 / 0.030
G13     38.4           10.6                6.4 +/-   12.91      17.7 +/-   12.91  0.060 / 0.040
G15     52.0           42.0               11.5 +/-    0.78      16.1 +/-    0.78  0.220 / 0.340
G20     317.7          63.8               13.1 +/-    0.78      14.4 +/-    0.78  0.100 / 0.410
G21     26.0           75.7               14.2 +/-    0.61      14.6 +/-    0.61  0.030 / 0.060
G24     115.0          18.9               14.7 +/-    0.96      33.3 +/-    0.96  0.030 / 0.050
G27     314.5          24.9               10.1 +/-    2.17      19.7 +/-    2.17  0.150 / 0.140
G29     168.1          23.4               15.3 +/-    2.12      31.0 +/-    2.12  0.170 / 0.190
G32     205.2          17.1               14.8 +/-    1.51      35.0 +/-    1.51  0.160 / 0.180