The retention times are calculated from the moment the sample is injected
in the chromatographic column (IT FLASH1). In the chromatogram, this
corresponds to the first peak observed in time, which is generated by the
flash heating of the injection trap of SAM-GC. This time is 
472005325.36 s (sclk) for this chromatogram. The retention time is 
calculated by subtracting this time, to the times of the peaks maxima.

peak 0 ; IT flash 1  ; 1
peak 1 ;   ; 181
peak 2 ;   ; 187
peak 3 ;   ; 216
peak 4 ;   ; 246
peak 5 ;   ; 320
peak 6 ;   ; 343
peak 7 ;   ; 499
peak 8 ;   ; 553
peak 9 ;   ; 627
peak 10 ;   ; 680
peak 11 ;   ; 805
peak 12 ;   ; 899
peak 13 ;   ; 940
peak 14 ;   ; 1061
peak 15 ; IT flash 2  ; 1102

The abundance given in the table corresponds to the area of the peaks which
are measurable. These surfaces are proportional to the amount of the species
detected when a peak is eluted. When peaks are co-eluted (over of different
peaks), the peaks are fitted using a gaussian function. If the fit does not work, 
only one surface value is given, corresponding to the sum of the
abundances of the species contributing to the peak.The areas are calculated
using a trapezoidal rule, after a baseline subtraction.