age  rate1     rate2   rate3    rate4  weight
1   0.14817   0.21896 0.28674 0.37391 37.4 
2   0.47412   0.80277 1.05824 1.25469 30.1 
3   0.73136   1.55946 2.33029 2.90461 21.5 
4   0.73207   1.63585 2.85724 4.22945 11.O