0.022585 Sound On 20.332290 Sound Off 21.527914 Sound On 243.097075 Sound Off 244.276213 Sound On 745.643900 Sound Off 755.039093 Sound On 1099.191701 Sound Off 1102.432132 Sound On 1747.651973 Sound Off 1748.168571 Sound On 3599.018662 Sound Off