PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-21:57:50
G10     272.9          42.7               10.9 +/-    1.26      15.3 +/-    1.26  0.040 / 0.050
G13     39.5           13.5                6.9 +/-    2.66      17.9 +/-    2.66  0.040 / 0.050
G15     54.9           45.6                9.0 +/-    1.05      12.0 +/-    1.05  0.270 / 0.370
G16     274.5          10.9                9.0 +/-    2.98      24.6 +/-    2.98  0.140 / 0.350
G20     308.2          62.3                8.7 +/-    0.60       9.7 +/-    0.60  0.040 / 0.050
G21     13.5           74.0                9.6 +/-    0.57      10.0 +/-    0.57  0.040 / 0.050
G24     117.8          16.9                9.1 +/-    1.98      21.6 +/-    1.98  0.210 / 0.460
G27     316.7          22.1                8.1 +/-    2.00      16.9 +/-    2.00  0.360 / 0.290
G29     167.6          26.5                8.6 +/-    1.67      16.2 +/-    1.67  0.150 / 0.440
G32     204.8          13.1               10.9 +/-    2.42      28.4 +/-    2.42  0.120 / 0.420