PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/26-22:27:40
G05     49.9           14.1                7.1 +/-    1.91      17.9 +/-    1.91  0.050 / 0.070
G10     238.2          16.4               13.4 +/-    2.57      32.2 +/-    2.57  0.050 / 0.070
G13     70.4           34.9               10.7 +/-    1.12      17.1 +/-    1.12  0.060 / 0.140
G15     118.2          54.5               12.6 +/-    0.36      15.1 +/-    0.36  0.070 / 0.130
G16     311.6          13.3                6.8 +/-    1.61      17.7 +/-    1.61  0.030 / 0.030
G20     251.4          39.1               12.6 +/-    1.51      18.6 +/-    1.51  0.030 / 0.050
G21     316.3          48.5               10.1 +/-    1.00      13.0 +/-    1.00  0.110 / 0.350
G26     284.4          19.7                7.7 +/-    1.62      17.2 +/-    1.62  0.100 / 0.350
G29     155.3          68.0               12.5 +/-    0.52      13.4 +/-    0.52  0.100 / 0.220