I read it a little differently at Unisys Best Track ..it shows that the 981 pressure was during 09/15/00Z . When the winds were 110

That is the only time that a pressure was listed. There was not a pressure listed for the time when the winds were listed at 140

below is a cut/past form teh unisys besttrack page for Ethel
Date: 14-17 SEP 1960
Hurricane ETHEL
ADV LAT LON TIME WIND PR STAT
1 23.90 -90.60 09/14/12Z 40 - TROPICAL STORM
2 25.60 -89.70 09/14/18Z 75 - HURRICANE-1
3 27.00 -89.10 09/15/00Z 110 981 HURRICANE-3
4 28.10 -88.90 09/15/06Z 140 - HURRICANE-5
5 29.10 -88.90 09/15/12Z 80 - HURRICANE-1
6 29.90 -89.00 09/15/18Z 60 - TROPICAL STORM
7 30.70 -89.00 09/16/00Z 45 - TROPICAL STORM
8 31.30 -89.00 09/16/06Z 35 - TROPICAL STORM
9 32.00 -88.90 09/16/12Z 35 - TROPICAL STORM
10 32.90 -88.50 09/16/18Z 30 - TROPICAL DEPRESSION
11 33.90 -88.10 09/17/00Z 25 - TROPICAL DEPRESSION
12 35.00 -88.00 09/17/06Z 20 - TROPICAL DEPRESSION
13 36.00 -87.60 09/17/12Z 15 - TROPICAL DEPRESSION
14 36.80 -87.00 09/17/18Z 15 - TROPICAL DEPRESSION