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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by noff73[/i] [br]Hi! I think my question is pretty simple but I still struggle to solve it:( So, I am calculating the experimental data in my beta-galactosidase assay. I have one column (say, ColB), which has the time format (mm:ss). ColumnC has some numerical values (optical density of samples at 420nm). For estimating the activity I have to do the division procedure: ColC/ColB. But whenever I am doing that - I am getting some weird numbers (f.ex. 0,436 / 24:45 - the result is 25.3673)... - Could you tell me, please, what can be wrong? - Or, as alternative, is there any simple way for converting my original time format (mm:ss) into secunds only? Sincerely, Ilya [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.