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Table 2 Calculating the arithmetic and geometric mean SCC values (* 1000) for a sample herd during the first three months of the year, immediately following a break-in-supply

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

Month SCC test results Seasonal adjustment factor Monthly arithmetic mean Monthly geometric mean Calculation method 1 Calculation method 2
Adjusted geometric mean Rolling geometric mean Adjusted SCC Rolling geometric mean
January 438 0.39 403.50 395.62 154.29 - 170.82 -
540 210.60
413 161.07
402 156.78
283 110.37
345 134.55
February 513 0.74 470.29 460.49 340.76 - 379.62 -
328 242.72
463 342.62
662 489.88
408 301.92
504 372.96
414 306.36
March 659 1.00 402.29 377.65 377.65 270.79 659.00 278.51
555 555.00
394 394.00
407 407.00
288 288.00
226 226.00
287 287.00
  1. The two methods of rolling mean calculation are applied for March, this being the first month with three months of consecutive SCC results