PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-01:42:30
G02     58.3           33.2               11.2 +/-    2.28      18.4 +/-    2.28  0.060 / 0.100
G05     59.6           61.4               14.1 +/-    0.90      15.8 +/-    0.90  0.080 / 0.060
G12     186.6          36.9               17.2 +/-    0.73      26.4 +/-    0.73  0.140 / 0.330
G13     128.6          13.7               17.4 +/-    2.27      44.6 +/-    2.27  0.170 / 0.380
G15     163.8          11.5               14.8 +/-   27.28      39.9 +/-   27.28  0.070 / 0.070
G21     270.4          16.9               16.5 +/-    2.63      39.3 +/-    2.63  0.060 / 0.080
G25     238.9          53.3               16.8 +/-    6.21      20.3 +/-    6.21  0.170 / 0.270
G29     330.4          55.9               17.1 +/-    0.51      20.2 +/-    0.51  0.180 / 0.400