Table 7.

Gas concentrations in animal shelters at the zoo in Chorzów

Animals	Conc. CO2 (ppm)	Conc. NH3 (ppm)	Conc. H2S (ppm)
	Average ± st. dev. (range)
Giraffes	2375 ± 394.75 (1800–2700)	1.75 ± 3.5 (0–7)	0 ± 0 (0–0)
Elephants	1475 ± 457.34 (1000–2000)	0 ± 0 (0–0)	0 ± 0 (0–0)
Camels	850 ± 288.67 (500–1200)	0 ± 0 (0–0)	0 ± 0 (0–0)
Colobinae	1750 ± 858.29 (1000–2800)	0 ± 0 (0–0)	0 ± 0 (0–0)
Kangaroos	747.5 ± 212.19 (490–1000)	0 ± 0 (0–0)	0 ± 0 (0–0)
Control	437.5 ± 50.57 (380–500)	0 ± 0 (0–0)	0 ± 0 (0–0)