PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/22-12:27:50
G08     294.4          23.6                5.1 +/-    1.29      10.2 +/-    1.29  0.040 / 0.080
G10     4.1            62.8                5.3 +/-    0.86       5.9 +/-    0.86  0.050 / 0.080
G14     227.5          45.2                6.9 +/-    2.20       9.3 +/-    2.20  0.100 / 0.100
G18     317.4          10.8               -7.8 +/-   14.10     -21.5 +/-   14.10  0.110 / 0.110
G20     62.2           53.3                5.3 +/-    0.69       6.5 +/-    0.69  0.030 / 0.030
G21     144.6          38.3                6.2 +/-    0.54       9.3 +/-    0.54  0.040 / 0.020
G24     56.3           24.9                4.4 +/-    1.85       8.5 +/-    1.85  0.030 / 0.030
G27     259.8          33.0                5.1 +/-    2.74       8.3 +/-    2.74  0.030 / 0.030
G32     239.1          62.3                6.9 +/-    1.23       7.7 +/-    1.23  0.070 / 0.140