We are planning on sending out an emailed link to an online electronic transportation survey on a Monday to survey our building's entire tenant population about their commute for the prior week (M-F). We were thinking that we could leave the link open for survey responses for a few days. Is there any guidance or has anyone had any feedback regarding how long an online survey was open for responses? Would it be acceptable to leave the survey open for more than just one day to collect responses (i.e. for a week, or at least for a few days) in order to take into account those employees that may be away from their desk on the day the link is sent out? Also, is it acceptable to survey on a Monday for the prior M-F work week? We just think we may get better responses from tenants from an emailed survey on a Monday vs. sending it out on a Friday. Does anyone have any feedback about doing it this way?