For (1), is there a Dm - M correlation ?

For (2), is there a - correlation ?

Can address these questions using the 1-min pair samples:(a) ‘co-relate’ (same DSDs)(b) ‘cross-relate’ (one against the other)

No bias in Dm

No bias in M

M

M

SN16 – SN16

SN25 – SN25

SN16 – SN25

SN25 – SN16

Power-lawfitted line

Same line

shows biasSN25 data : more small drops

Significant bias in → so difficult to compare FSE values

Remove mean bias and re-compare ……

Instrument-to-instrument variability: 38 events