PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/11-19:27:50
G02     58.7           33.9                9.1 +/-    2.08      14.8 +/-    2.08  0.060 / 0.080
G05     57.5           61.2               10.4 +/-    0.86      11.7 +/-    0.86  0.070 / 0.110
G12     184.4          32.8               11.8 +/-    1.55      19.5 +/-    1.55  0.300 / 0.510
G13     126.3          15.3               13.7 +/-    1.77      33.9 +/-    1.77  0.300 / 0.380
G15     163.6          12.9               15.3 +/-    1.98      39.9 +/-    1.98  0.140 / 0.420
G21     271.8          16.8               12.6 +/-    2.25      29.9 +/-    2.25  0.160 / 0.410
G25     237.2          51.8               13.1 +/-    2.80      16.1 +/-    2.80  0.170 / 0.220
G29     329.3          55.2               10.7 +/-    0.72      12.7 +/-    0.72  0.130 / 0.180