wght2 = modTime / recSpacing
wght1 = 1. _d 0 - wght2
O tRec0, tRec1, tRec2, wght1, wght2,
wght2 = ( tmpTime - recSpacing*(tRec1 - 1) )/recSpacing
_RL wght1, wght2
wght2 = 0.