公共汽车车门高度是按男子与车门碰头机会不高于\(0.0228\)来设计的,设男子身高\(X\)服从正态分布\(N\left( 170,{{7}^{2}} \right)(\)单位:\(cm)\),参考以下概率\(P\left( \mu -\sigma < X\leqslant \mu +\sigma \right)=0.6826\),\(P\left( \mu -2\sigma < X\leqslant \mu +2\sigma \right)=0.9544\),\(P\left( \mu -3\sigma < X\leqslant \mu +3\sigma \right)=0.9974\),则车门的高度\((\)单位:\(cm)\)至少应设计为_________.