15 J/sec15 \mathrm{~J} / \mathrm{sec}15 J/sec
12 J/sec12 \mathrm{~J} / \mathrm{sec}12 J/sec
11 J/sec11 \mathrm{~J} / \mathrm{sec}11 J/sec
9 J/sec9 \mathrm{~J} / \mathrm{sec}9 J/sec