PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-21:27:50
G02     58.4           33.7                7.5 +/-    3.29      12.3 +/-    3.29  0.090 / 0.070
G05     58.5           61.3                9.5 +/-    0.52      10.7 +/-    0.52  0.110 / 0.080
G12     185.4          34.8               13.1 +/-    0.80      20.9 +/-    0.80  0.070 / 0.110
G13     127.3          14.5               13.5 +/-    2.29      34.0 +/-    2.29  0.070 / 0.090
G15     163.6          12.2               18.1 +/-    4.82      48.0 +/-    4.82  0.160 / 0.330
G21     270.9          16.3               10.8 +/-    2.32      26.1 +/-    2.32  0.290 / 0.380
G25     238.8          52.6               11.0 +/-    3.58      13.5 +/-    3.58  0.160 / 0.470
G29     329.2          54.8               10.3 +/-    0.77      12.3 +/-    0.77  0.150 / 0.400