There's a difference between optimum temps and the range of temps possible in their natural environment, imho. I like mine to live as long as possible, so I prefer to keep the temps moderated and avoid the extreme tolerances.
What I consider the best range for adult male panthers is
day basking spot up to 90F/32C max
day ambient range 70-80F /21 -26C
night to a low of 65F/18C
I treat females slightly differently, with a lower basking temp.
I treat young ones as if they are delicate, with a very moderate temp range, day basking 80F-84F/28C and night low of 68F/20C
Veiled/Chamaeleo males I'd go a little higher /lower:
day basking spot 96.5F/36C
day ambient range 70-80F/21 -26C
night to a low of 60F/15.5C