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Message-ID: <CANDXbir+zRUqGQ-AgaGNYj5Z4GJCBhAuFHhEfyp7B=wYMMpGMA@mail.gmail.com> Date: 2011-11-11T02:28:37Z From: Lao Meng Subject: How to compute time interval? An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20111111/45dc032a/attachment.pl>