751 , ( 1 752 , s 754.4 755.5 755,9 753.8 759.0 760 , a 763 , C 745.9 751.4 757.5 758.8 763 , a 762,7 748.5 752.0 754.3 760.9 753.3 766.0 763.5 1.4 7.4 3.0 6.0 5.47.4