These are files that are significantly smaller than the others.

askja% find . -name "*.mat" -size -201072408c -ls
996673124 90440 -rw-r--r--   1 lparker  porotomo1 92607557 Dec  7 04:20 ./0314/PoroTomo_iDAS16043_160314193442.decimated.mat
996677274 168748 -rw-r--r--   1 lparker  porotomo1 172794059 Dec  7 06:22 ./0316/PoroTomo_iDAS16043_160316170349.decimated.mat
996677975 167136 -rw-r--r--   1 lparker  porotomo1 171145158 Dec  7 06:41 ./0316/PoroTomo_iDAS16043_160316222125.decimated.mat
996679562 138316 -rw-r--r--   1 lparker  porotomo1 141632568 Dec  7 07:28 ./0316/PoroTomo_iDAS16043_160316222433.decimated.mat
996680811 115048 -rw-r--r--   1 lparker  porotomo1 117807119 Dec  7 08:05 ./0317/PoroTomo_iDAS16043_160317230122.decimated.mat
996694577  864 -rw-r--r--   1 lparker  porotomo1   884736 Dec  7 14:45 ./0320/PoroTomo_iDAS16043_160320002721.decimated.mat
996695741 50512 -rw-r--r--   1 lparker  porotomo1 51723634 Dec  7 15:18 ./0321/PoroTomo_iDAS16043_160321141721.decimated.mat
996697390 162880 -rw-r--r--   1 lparker  porotomo1 166786544 Dec  7 16:14 ./0321/PoroTomo_iDAS16043_160321154434.decimated.mat
996697960 120836 -rw-r--r--   1 lparker  porotomo1 123734400 Dec  7 16:30 ./0322/PoroTomo_iDAS16043_160322015445.decimated.mat
996698905 146112 -rw-r--r--   1 lparker  porotomo1 149616313 Dec  7 16:58 ./0322/PoroTomo_iDAS16043_160322042620.decimated.mat