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CDCLVD1216: CDCLVD1216 propagation delay vs temp performance (2)

Part Number: CDCLVD1216

Hello team,

I have relative question about CDCLVD1216 propagation delay vs temp performance.
I found its performance as below. 
http://e2e.ti.com/support/clock-and-timing/f/48/p/809200/2994713#2994713?jktype=e2e

Mean Values
temperature -40C -40C -40C 25C 25C 25C 85C 85C 85C
t_PD (ps) 1685.29 1614.88 1526.66 1786.60 1710.58 1621.39 1938.23 1858.43 1764.43

Standard Deviation
temperature -40C -40C -40C 25C 25C 25C 85C 85C 85C
t_PD (ps) 60.19 54.42 51.39 63.48 58.80 56.89 68.12 62.30 60.86

I do not know how should I understand above data because there are 3 x -40C data,  3x 25c data and 3x 85c data. Does these data mean 3 lot data?

Your help would be so appreciated.

Best Regards,
Akihisa Tamazaki