PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-04:28:00
G08     296.2          22.3                8.2 +/-    2.28      17.2 +/-    2.28  0.050 / 0.080
G10     8.4            62.8                6.3 +/-    0.61       7.0 +/-    0.61  0.060 / 0.100
G14     228.4          45.5               10.5 +/-    0.93      14.0 +/-    0.93  0.090 / 0.110
G20     63.8           52.9                6.0 +/-    0.48       7.3 +/-    0.48  0.070 / 0.120
G21     146.2          41.6                8.3 +/-    0.92      11.7 +/-    0.92  0.030 / 0.030
G24     57.1           25.9                6.9 +/-    0.66      13.2 +/-    0.66  0.040 / 0.030
G27     256.5          32.5                7.7 +/-    1.41      12.8 +/-    1.41  0.060 / 0.090
G32     241.7          64.6                9.7 +/-    0.42      10.6 +/-    0.42  0.070 / 0.090