What is the range of this set of heights in centimeters?

{140, 166, 132, 165, 152, 168, 181, 158, 173, 171, 180, 182, 163, 177, 180, 142, 147, 149, 178}

38
41
46
50

(If you can help me with this maybe you can help me with my last posted question? It hasn't been answered and I need help!)