if(a1<200,"1",if((a1>200)*(a1<300),"2",if((a1>300)*(a1<500),"3",if((a1>500)*(a1<800),"4",if((a1>800)*(a1<1000),"5",if((a1>1000)*(a1<1200),"6",if((a1>1200)*(a1<1500),"7",if((a1>1500)*(a1<1800),"8",if((a1>1800)*(a1<2000),"9",if((a1>2000)*(a1<2200),"10",if((a1>2200)*(a1<2500),"11",if((a1>2500)*(a1<2800),"12",if((a1>2800)*(a1<3000),"13",if((a1>3000)*(a1<3200),"14",if((a1>3200)*(a1<3500),"15","")))
LOOKUP($A$1,{0,200,300,500,800,1000,1200,1500,1800,2000,2200,2500,2800,3000,3200,3500},{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,""})
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