Lessons Learnt from Gauging Software Metrics of Cabin Software in a Commercial Airliner

Table 5

Comparison of maximum values found in data sets.

Metric	Ramos	Stamelos	CMMS	Rec. Limits
Overall LoC	3 M	606 K	1.5 M	—
LoC per module	3 k–43 k	4 k–40 k	172–72,300	—
Comment LoC	20.3%–29.8%	0–132%	20–242%
Cyclomatic complexity	11.7–50.6	1–35	0–383	<10
Nesting	—	1–8	0–12	0–5
Fan-out	0.5–9.4	2.00–6.03	1–143	—
Frequency	—	1.5–9.9	0–2242	—
Length	—	18–516	0–70,173	—
Effort	32.7–1407.4	—	0–4.5 B	—