Table 2
Descriptive statistics of the test-day records of milk yield (kg) for some selected days in milk with 3X and 4X milking frequency

	3X Milking						4X Milking
	Lact 1			Lact 2			Lact 1			Lact 2
DIM	N	Mean	SD	N	Mean	SD	N	Mean	SD	N	Mean	SD
5–35	6392	29.7	4.9	7691	38	6.3	1142	32.5	5	1313	41.8	6.1
36–65	7022	33.4	4.9	8218	40.7	6.4	1298	37.3	4.8	1374	46.1	6.2
66–95	7097	33.9	5.1	8246	40.2	6.6	1292	38.6	4.9	1375	45.8	6.2
96–125	7430	33.4	5	8778	38.6	6.6	1336	38	4.8	1467	43.8	6.2
126–155	6816	32.8	5.3	7815	36.4	6.7	1330	37.2	4.8	1448	41.3	6.1
156–185	6293	32.4	5.4	7057	34.4	6.7	1375	36.4	4.8	1394	38.8	5.9
186–225	5234	31.8	5.6	5456	32.5	6.7	1336	35.4	4.7	1260	36.6	6.3
226–245	4287	31	5.6	4138	30.9	6.8	1324	34.4	4.6	1217	34.2	6.3
246–275	3105	30	5.7	2702	29.1	6.7	1318	39	4.5	1045	31.8	6.2
276–305	1938	29.2	5.8	1453	26.7	6.1	1045	31.9	4.8	747	29.8	6