Table 1

Summary of estimates and parameter confidence intervals by model

ParametersLevel 1 discovery curve model
(Includes only grade 1 evidence of discovery)		Level discovery curve model
(Includes grade 1 or 2 evidence of discovery)		Level 3 discovery curve model
(Includes grade 1, 2 or 3 evidence of discovery)
Total no of species known in 2017 (unmodelled)156173195
c505174
Embedded Image169185206
N119.36
(107.50–134.98)		134.07
(123.98–148.55)		132.29
(123.12–147.48)
pEmbedded ImageEmbedded ImageEmbedded Image
a0.013
(0.009–0.017)		0.013
(0.009–0.017)		0.015
(0.011–0.019)
k15.35
(11.52–18.47)		15.56
(12.28–18.96)		15.18
(12.50–17.79)
 Embedded Image59.47
(57.05–61.66)		59.33
(57.32–61.45)		59.32
(56.91–61.45)
f33.99
(15.86–54.52)		34.83
(16.91–59.88)		32.30
(15.03–53.16)