JavaScript Kata 6 clean or dirty w thresh holds ratio

kata6.js

let samples  = ['clean','clean','clean', 'dirty' , 'dirty'] 
// function checkAir(air){  
let dirties = 0;
let cleans = 0;

let threshhold = 0.75
let returnRatio = 0


function airIntake(samples , threshhold){
for (let i in samples){ 
    // console.log(air[i])

    if (samples[i] === "clean"){ 
        cleans += 1
    }
    if (samples[i] === "dirty"){ 
        dirties += 1
    }


}
console.log("  so you have :" , cleans, " clean and  ,")
console.log(dirties , " dirties ")

returnRatio = cleans / dirties
console.log( " return ratio here is   "  ,returnRatio)

console.log( " Threshdoler " , threshhold  , "  ratio " , returnRatio )


if(returnRatio <= threshhold){
    console.log("the air is dirty  ");
} else if(returnRatio > threshhold){ 
    console.log("that there air was clean  ")
}



}



airIntake(samples , threshhold)
// }