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Table 3 Descriptive statistics of SCC and monthly volume records

From: The impact of removal of the seasonality formula on the eligibility of Irish herds to supply raw milk for processing of dairy products

Statistic Usablea Unusablea
6,559 (39.6%) herds 10,020 (60.4%) herds
Somatic Cell Count Number (%) of herdsb
 Number of SCC records (%) 71,815 (41.1) 102,810 (58.9)
  SCC (x 1,000 cells/mL)  
 Mean (Standard deviation) 214 (123.48) 208.4 (123.68)
  5th percentile 70 71
  25th percentile 131 129
  50th percentile 191.7 186
  75th percentile 270 259
  95th percentile 427.18 414
Monthly volume (Litres) Number (%) of herdsb
 Number of monthly volume records (%) 73,245 (41.5) 103,391 (58.5)
  Litres
 Mean (Standard deviation) 28,230.9 (25,143.56) 30,777.7 (26,903.61)
  5th percentile 2,810 2,449
  25th percentile 11,080 11,940
  50th percentile 22,164 25,131
  75th percentile 38,111 42,078
  95th percentile 73,243 78,833
  1. aRecords with or without a national herd identifier were termed usable or unusable data, respectively
  2. bThe numbers presented are based on records with a herd identifier. The number of herds without a herd identifier cannot be calculated