Table 5 Quality indicators and comment categories used to characterize the HITRAN-\({{\rm{H}}}_{2}^{\,16}{\rm{O}}\) lines.

From: The W2024 database of the water isotopologue \({{\rm{H}}}_{2}^{\,16}{\rm{O}}\)

Indicator

Data type

Indicator value

A

B

C

D

Q1

line match

unique

ambiguous

expt. only

none

Q2

position

approved

acceptable

change/conflict

unverified

Q3

uncertainty code (position)

approved

undefined

change/conflict

unverified

Q4

intensity

approved

acceptable

change/conflict

unverified

Q5

assignment

approved

undefined

change/conflict

unverified

Q6

lower-state energy

approved

acceptable

change/conflict

unverified

Comments to Q1b:

BADSYM

QUADRUP

SMALLINT

DUPSTATE

  1. aThe uncertainty codes of the positions are specified on the HITRANonline page. The term “expt. only” refers to a unique match with a measured W2024 line not present in the CW2024 list.
  2. bMeaning of comments made for certain ill-matched HITRAN lines: (i) BADSYM = symmetry violation, (ii) QUADRUP = quadrupole transition, (iii) SMALLINT = a line with too small (<10−31cm molecule−1) intensity, and (iv) DUPSTATE = a transition whose upper state is deleted from W2024.
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