PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-02:27:50
G10     281.7          46.6                9.5 +/-    1.48      12.5 +/-    1.48  0.040 / 0.050
G15     49.6           37.9                6.3 +/-    1.06       9.6 +/-    1.06  0.040 / 0.040
G20     323.0          64.1                8.3 +/-    0.67       9.1 +/-    0.67  0.080 / 0.160
G21     43.8           76.9                8.1 +/-    0.38       8.3 +/-    0.38  0.080 / 0.150
G24     110.2          20.9                8.9 +/-    0.60      19.2 +/-    0.60  0.060 / 0.060
G27     312.4          26.9                8.6 +/-    2.09      16.1 +/-    2.09  0.050 / 0.060
G29     167.3          17.7                9.2 +/-    1.08      21.3 +/-    1.08  0.040 / 0.080
G32     206.8          18.2               10.5 +/-    1.56      24.1 +/-    1.56  0.030 / 0.080