After lowering the incubation temp yesterday cell no.10s temp dropped from an average of about 20.5degC to about 19.  By 11:30pm last night it was generating 266mv 0.95ma.

This morning @ 8:37am no.10 is at 268mv 0.96 cell temp 18.5degC.  I've again lowered the incubation temp. another 10degF, to its lowest setting.  One more day of slight warming and then we see what happens when nature takes over.