model machine day1 day2 day3 day4 day5
1 1 65 58 63 57 66
1 2 68 62 75 64 70
1 3 56 65 58 70 64
1 4 45 56 54 48 60
2 1 74 81 76 80 68 
2 2 69 76 80 78 73
2 3 52 56 62 58 51
2 4 73 78 83 75 76
3 1 69 83 74 78 80
3 2 63 70 72 68 75
3 3 81 72 73 76 70
3 4 67 79 73 77 71