The arithmetic mean stacks with and without forest transition contamination for each sample. Composite spectra are computed using forest-contamination-in stacks for <1290 Ang and forest-contamination-out stacked for >1290 Ang in order to maximise S/N.

Mean stacks with forest contamination (no part of the individual spectra discarded based on forest contamination)
	specarithmean_0_-100all0.30_1_-0.05-0.250_2.4-3.1_1000_3..dat	 
                - stack of P30 SBLAs with forest contamination
	specarithmean_0_-100all0.75_1_-0.05-0.250_2.4-3.1_1000_3..dat
                - stack of P75 SBLAs with forest contamination
	specarithmean_0_-100all0.90_1_-0.05-0.250_2.4-3.1_1000_3..dat
                - stack of P90 SBLAs with forest contamination
	specarithmean_0_-100all3_1_-0.05-0.050_2.4-3.1_1000_3..dat
                - stack of FS0 SBLAs with forest contamination
	specarithmean_0_-100all3_1_0.050-0.150_2.4-3.1_1000_3..dat
		- stack of FS1 SBLAs with forest contamination
	specarithmean_0_-100all3_1_0.150-0.250_2.4-3.1_1000_3..dat
		- stack of FS2 SBLAs with forest contamination

Mean stacks without forest contamination (forest beyond 1216 Ang in the absorber rest frame is discarded)
	specarithmean_1_-100all0.30_1_-0.05-0.250_2.4-3.1_1000_3..dat
                - stack of P30 SBLAs without forest contamination
	specarithmean_1_-100all0.75_1_-0.05-0.250_2.4-3.1_1000_3..dat
                - stack of P75 SBLAs without forest contamination
	specarithmean_1_-100all0.90_1_-0.05-0.250_2.4-3.1_1000_3..dat
                - stack of P90 SBLAs without forest contamination
	specarithmean_1_-100all3_1_-0.05-0.050_2.4-3.1_1000_3..dat
                - stack of FS0 SBLAs without forest contamination
	specarithmean_1_-100all3_1_0.050-0.150_2.4-3.1_1000_3..dat
                - stack of FS1 SBLAs without forest contamination
	specarithmean_1_-100all3_1_0.150-0.250_2.4-3.1_1000_3..dat
                - stack of FS2 SBLAs without forest contamination

Columns:
	wavelength
	mean_flux
	count - # of contributing pixels
	sigma_flux
	mean_redshift of contributing pixels