EcoSpold 1 · Calculation comparison

BAFU 2026 v1, Total

A comparison of published impact results with VoLCA calculations from the same source data and the publisher’s impact factors. Points on the diagonal agree.

Engine version: volca 0.14.0 (bd7e64a, v0.14.0, linux)
Measured on: 2026-09-20

Comparison measurements and reference
Database	BAFU 2026 v1
Source format	EcoSpold 1
Impact method collection	Ecological Scarcity 2021
Impact category	Total
Unit	UBP
Activities compared	11,714
Median ratio (VoLCA / published)	1.0079
Comparison band	1%
Activities outside the band	7,966
Share outside the band	68%
Verdict	Disagrees: misses the agreement a release is held to
Points drawn	2,121
Largest relative deviation	-99.95%
Activity with largest deviation	Meranti, standing, under bark, u=70%, in rainforest
Published reference	BAFU-2026 v1 LCIA Results_corrected.xlsx

Each point is one activity: what BAFU 2026 v1 published for Total (UBP), against what VoLCA computes from the same EcoSpold 1 source under the publisher's own Ecological Scarcity 2021 factors. The black line is equality and the grey band is 1%. 11,714 activities were compared; 7,966 fall outside the band, more than a picture can hold, so 1,953 of the 11,714 are drawn, evenly spaced over the published value whichever side of the band they fall, and the 168 of the 200 farthest from equality that this walk missed are added. Where several fall on one spot, at most three markers are drawn there, since a fourth would not darken it. Median ratio 1.0079, 68.00% outside the band. This misses the agreement a release is held to: at most 5% of activities outside the band and a median ratio inside it.