526: interframe interval = 1/29.72 s  avg=1/27.73  stddev=1/64.42
  525: interframe interval = 1/30.47 s  avg=1/23.19  stddev=1/43.83
  614: interframe interval = 1/247.49 s  avg=1/28.56  stddev=1/73.32
  538: interframe interval = 1/23.93 s  avg=1/28.63  stddev=1/69.60
  537: interframe interval = 1/30.97 s  avg=1/27.25  stddev=1/64.63
  525: interframe interval = 1/29.07 s  avg=1/22.50  stddev=1/42.18
  526: interframe interval = 1/29.36 s  avg=1/22.85  stddev=1/44.12