Is it this command "net.divid​eParam.tes​tRatio" use the data sets unseen by NN ???

So, if I’ve understood for example for this case my data sets periods 13 years

net.divideParam.trainRatio = 75/100;( about 10 years are used for training) 

net.divideParam.valRatio = 15/100; (about 2 years are used for validaition to avoid "overfitting")

|net.divideParam.testRatio = 10/100 ( about 1 year used to test our model, we can consired that unseen by NN !!)