PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-22:43:00
G10     245.8          24.1               12.9 +/-    0.64      25.7 +/-    0.64  0.040 / 0.050
G13     58.5           31.6                7.6 +/-    0.97      12.9 +/-    0.97  0.040 / 0.040
G15     97.8           57.8               12.4 +/-    0.51      14.4 +/-    0.51  0.070 / 0.150
G16     301.8          15.3                6.4 +/-    1.27      15.9 +/-    1.27  0.060 / 0.150
G20     262.7          46.7               12.3 +/-    3.67      16.2 +/-    3.67  0.030 / 0.040
G21     326.9          55.5               10.0 +/-    0.75      11.8 +/-    0.75  0.030 / 0.040
G26     273.9          17.4                8.7 +/-    2.04      20.4 +/-    2.04  0.110 / 0.420
G29     161.1          56.1               10.9 +/-    0.99      12.9 +/-    0.99  0.120 / 0.380