527: interframe interval = 1/30.56 s  avg=1/23.12  stddev=1/29.98

  539: interframe interval = 1/37.94 s  avg=1/23.92  stddev=1/33.14

  540: interframe interval = 1/31.88 s  avg=1/22.01  stddev=1/34.09

  539: interframe interval = 1/14.87 s  avg=1/24.43  stddev=1/33.30

  539: interframe interval = 1/29.89 s  avg=1/23.04  stddev=1/32.19

  540: interframe interval = 1/31.11 s  avg=1/21.57  stddev=1/32.01

  551: interframe interval = 1/29.23 s  avg=1/22.54  stddev=1/32.95

  528: interframe interval = 1/32.02 s  avg=1/22.09  stddev=1/32.05