Please help,
how can I sum all the downtime of UL4214 - from the data... tried usin Sumifs but still confusing
<colgroup><col width="72" style="width: 54pt;" span="2"> <col width="90" style="width: 68pt; mso-width-source: userset; mso-width-alt: 2880;"> <col width="72" style="width: 54pt;"...