Table 1.

Data description

Farm's characteristics	Farm 1		Farm 2
No. of animals with records	356		127
No. of measurements	437,888		5,645
No. of daily observations	31,239		3,190
Measuring period 1	Dec. 2, 2014	Feb. 3, 2016	Feb. 5, 2016	Mar. 14, 2016
Measuring period 2	June 1, 2016	Sept. 17, 2016	NA1	NA

	Lactation		Lactation
	1	2+	1	2+
No. of records per lactation	288,272	149,616	2,060	3,585
No. of cows per lactation	250	165	45	84
Average measurement period, d	83	64	25	25
Minimum measurement period, d	7	5	5	5
Maximum measurement period, d	171	183	37	35

¹NA = not available.