The entries I want to change to en dash are scattered in different spots throughout the entire TIME glossary, unfortunately. Some entries have hyphens, which I want to leave as is.
Here is a sample of my TIME glossary:
<data short="1012h" long="10-12 hours" />
<data short="1012wt" long="10-12 weeks' time" />
<data short="1012ya" long="10-12 years ago" />
<data short="1014d" long="10-14 days" />
<data short="1014d" long="10 and 14 days" />
<data short="1014dc" long="10- to 14-day course" />
<data short="1014hpd" long="10-14 hours per day" />
<data short="1015min" long="10-15 minutes" />
<data short="1015min" long="10 or 15 minutes" />
<data short="1015y" long="10-15 years" />
<data short="1015y" long="10 or 15 years" />
<data short="1015yho" long="10- to 15-year history of" />
<data short="1020yho" long="10- to 20-year history of" />