PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/01-20:58:10
G10     261.9          36.5               11.8 +/-    1.27      18.2 +/-    1.27  0.040 / 0.050
G13     44.2           21.0                8.3 +/-    2.64      17.7 +/-    2.64  0.050 / 0.050
G15     66.3           53.2               10.3 +/-    0.50      12.5 +/-    0.50  0.090 / 0.260
G16     283.8          14.1                8.2 +/-    1.13      20.8 +/-    1.13  0.200 / 0.360
G20     289.3          58.2                9.4 +/-    1.29      10.9 +/-    1.29  0.030 / 0.040
G21     350.4          67.7                9.9 +/-    0.65      10.7 +/-    0.65  0.030 / 0.030
G24     126.1          11.0               10.1 +/-   14.51      27.6 +/-   14.51  0.120 / 0.320
G27     320.9          14.3                7.2 +/-    1.77      18.1 +/-    1.77  0.200 / 0.390
G29     166.4          37.3               10.9 +/-    0.70      16.6 +/-    0.70  0.080 / 0.090