One lot, every knob

Viability Calculator

Any species, any protocol, your seed lot — nothing is pooled.
01Accession
02Germination test data
day, tested, germinated — one interval per row
03Re-collection threshold
70%
re-collect when predicted viability falls to this level (of all seeds)
σ sigma
probit loss rate
17.3
days/probit
DERIVED
P50
50% viability
26.0
days
DERIVED
P70
re-collect point
17.0
days
DERIVED
Ki
initial viability
93%
probit 1.51
DERIVED
999070503010201020304050viability %days in storage →P70 = 17d
MEASURED — observed ± Wilson 95%DERIVED — probit fit
PROVENANCE. 8 measured intervals · 400 seeds tested. σ and all P-values are derived from a maximum-likelihood probit fit to your counts — never pooled with other lots. σ is the field-preferred comparative axis. P70 here means time to 70% absolute viability — the baseline is this lot's fitted Ki, nothing external.