Table 2.

Results obtained in ICU during the measurement campaign January-February 2014 in RCH- Shtip

N2O (ppm)	Intensive Care Units
	Doctors			Nurses
	Min	Max	Mean ± SD	Min	Max	Mean ± SD
The lowest values	2	22	11.50 ± 5.70	5	41	21.83 ± 9.07
The highest values	12	57	32.17 ± 12.53	23	79	52.89 ± 18.20
TWA	9	34	20.06 ± 7.56	17	51	31.94 ± 10.45