The retention times are calculated from the moment the sample is injected
in the chromatographic column (IT FLASH or GC INJECTION). In the chromatogram, this
corresponds to the first peak observed in time, which is generated by the
flash heating of the injection trap (IT) of SAM-GC. This time is 
823647066.0 s (sclk) for GC 2 chromatogram. The retention times are 
calculated by subtracting this time, to the times of the peaks maxima.
The original TCD chromatograms are available in the file noise.csv.

GC column 2 run

peak 0 ;  GC2 INJECTION ; 0
peak 1 ;   ; 101
peak 2 ;  ; 148
peak 3 ;  ; 193
peak 4 ;  ; 406
peak 5 ;  ; 490
peak 6 ;  ; 632
peak 7 ;  ; 775
peak 8 ;  ; 936
peak 9 ;  ; 1214
peak 10 ;  ; 1276
peak 11 ;  ; 1393
peak 12 ;  ; 1577
peak 13 ;  ; 1652
peak 14 ;  ; 1720
peak 15 ;  ; 2349
peak 16 ;  ; 2507


The abundance given in the table (species.csv) corresponds to the area of the 
most abundant mass peak which are measurable for each peak. The unit is 
counts/sec/sec. There is no baseline correction for this fit.
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. All lot of the peaks in this chromatogram are sturated so retention times and abundances do not represent the diversity of the compounds in this sample.