# Grain size distribution: volume (A^3) ; No. of grains
   388632.83829628717                4
   473186.76204389997                3
   557740.68579151272                2
   642294.60953912546                5
   726848.53328673821                5
   811402.45703435107                5
   895956.38078196382                5
   980510.30452957656                4
   1065064.2282771894                3
   1149618.1520248021                2
   1234172.0757724149                4
   1318725.9995200278                3
   1403279.9232676404                3
   1487833.8470152533                0
   1572387.7707628659                0
   1656941.6945104788                0
   1741495.6182580916                0
   1826049.5420057043                1
   1910603.4657533171                0
   1995157.3895009300                0
   2079711.3132485426                1