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Table 1 Statistical summary of bacterial load, in public primary schools of Gondar city, Northwest Ethiopia, 2018. (n = 51)

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

Name of School Number of classrooms Mean Standard deviation Minimum Maximum Median
Morning bacterial load
 School 1 5 702.00 316.44 390 1183 741
 School 2 7 1131.00 515.87 559 2145 1066
 School 3 3 450.67 314.52 208 806 338
 School 4 8 5843.50 1973.45 3588 8528 5356
 School 5 7 5588.14 2167.85 3341 9100 4420
 School 6 8 3284.13 1185.78 2067 5668 3321.5
 School 7 7 748.43 179.95 585 1105 767
 School 8 6 2331.33 801.49 1430 3666 2158
 Total 51 2826.35 2408.76 208 9100 2093
Afternoon bacterial load
 School 1 5 1510.60 1267.53 728 3757 1001
 School 2 7 5404.29 2320.31 2301 8502 5460
 School 3 3 507.00 144.76 351 637 533
 School 4 8 5073.25 2517.63 2600 9984 4082
 School 5 7 7740.57 7228.03 2340 23,504 5304
 School 6 8 1158.63 709.06 260 2652 994.5
 School 7 7 4561.57 2031.61 819 7332 4332
 School 8 6 7895.33 1403.10 5720 9880 7943
 Total 51 4514.63 3918.20 260 23,504 3939