Indoor bacterial load and its correlation to physical indoor air quality parameters in public primary schools

Table 3 Statistical summary of physical indoor air quality parameters in public primary schools of Gondar city, Northwest Ethiopia, 2018 (n = 51)

Variables	Mean	Standard Deviation	Median	Minimum	Maximum
CO₂ 6:30 am	458.54	30.44	453	406	550
CO₂ 5:00 pm	429.12	27.05	422	401	548
T ^°C 6:30 am	14.27	0.94	14	12	16
T ^°C 5:00 pm	19.02	3.08	20	15	24
RH%6:30 am	39.37	14.25	45	21	61
RH%5:00 pm	36.37	13.89	39	14	57
PM2.5 6:30 am	68.18	43.42	48	18	173
PM2.5 5:00 pm	12.82	3.38	13	7	22
PM10 6:30 am	138.06	68.64	129	42	277
PM10 5:00 pm	55.92	22.06	51	21	144

N.B Carbon dioxide, (CO₂, ppm); Temperature, (T, °C); Relative humidity, RH (%); concentration of particulate matter concentration PM10 and PM2.5 (μg/m³)

ISSN: 2049-6958