PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-01:28:10
G02     61.7           30.8               11.7 +/-    0.45      20.2 +/-    0.45  0.040 / 0.100
G05     54.4           57.9               12.4 +/-    0.76      14.3 +/-    0.76  0.110 / 0.120
G12     183.7          29.4               15.5 +/-    2.66      27.5 +/-    2.66  0.100 / 0.280
G13     126.5          16.7               17.5 +/-    1.72      41.6 +/-    1.72  0.090 / 0.260
G15     162.9          13.8               19.7 +/-    1.41      50.4 +/-    1.41  0.030 / 0.040
G20     220.0          10.2               -7.6 +/-   19.98     -21.0 +/-   19.98  0.030 / 0.040
G21     272.9          18.2               14.5 +/-    3.05      33.4 +/-    3.05  0.060 / 0.090
G25     234.3          50.3               14.0 +/-    1.59      17.5 +/-    1.59  0.070 / 0.100
G29     329.1          55.9               13.2 +/-    0.57      15.6 +/-    0.57  0.080 / 0.270