Table 3.

Time relation between MP and AI for different threshold values

	AI first	AI = MP	MP first	Total
AI ≥ 27° and MP ≥ 30%	4	17	28	49
AI ≥ 27° and MP ≥ 33%	5	18	22	45
AI ≥ 27° and MP ≥ 40%	11	11	12	34
AI ≥ 30° and MP ≥ 30%	2	10	19	31
AI ≥ 30° and MP ≥ 33%	3	10	17	30
AI ≥ 30° and MP ≥ 40%	6	7	12	25