PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-17:12:50
G02     57.3           35.0                8.8 +/-    1.00      13.9 +/-    1.00  0.060 / 0.070
G05     61.4           63.9               10.0 +/-    0.84      11.0 +/-    0.84  0.050 / 0.070
G12     183.9          33.8               10.9 +/-    2.26      17.6 +/-    2.26  0.130 / 0.360
G13     127.6          14.1               12.9 +/-    4.27      32.8 +/-    4.27  0.150 / 0.440
G15     164.9          11.3               10.9 +/-   20.58      29.5 +/-   20.58  0.140 / 0.620
G21     270.4          15.7               10.5 +/-    1.78      25.6 +/-    1.78  0.150 / 0.470
G25     240.0          53.0                8.5 +/-    1.76      10.3 +/-    1.76  0.040 / 0.100
G29     327.6          52.9                6.8 +/-    1.25       8.3 +/-    1.25  0.040 / 0.100