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Entry time:	Mon Apr 24 22:27:29 2017
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<p><span style="font-size:12px">In response to a request by Amy, I make an estimae of the number of deep "station-years" of data obtained by ARA so far. This means roughly (# deep stations) * (# months livetime). This is very approximate, and only counts days where ARA has data in the storage vault on cobalt. It doesn't verify that cal pulsers are running, or that we actually have data for very hour of every day, etc.</span></p> <div style="margin-top:0;margin-bottom:0;"><span style="font-size:12px"><span dir="ltr">Not accounting for 2013 A1 data, I get the following estimate. All I did was "ls \| wc -l" on all of the data directories to count the number of days.</span></span></div> <div style="margin-top:0;margin-bottom:0;"><span style="font-size:12px"><span dir="ltr">ARA1: 285 days 2012 + 124 days 2014 + 29 days 2015 + 117 days 2016 + 0 days 2017 = 555 days total</span></span></div> <div style="margin-top:0;margin-bottom:0;"><span style="font-size:12px"><span dir="ltr">ARA2: 211 days 2013 + 310 days 2014 + 345 days 2015 + 314 days 2016 + 109 days 2017 = 1289 days total</span></span></div> <div style="margin-top:0;margin-bottom:0;"><span style="font-size:12px"><span dir="ltr">ARA 3: 214 days 2013 + 303 days 2014 + 251 days 2015 + 292 days 2016 + 0 days 2017 = 1060 days total</span></span></div> <div style="margin-top:0;margin-bottom:0;"><span style="font-size:12px"><span dir="ltr">So for the three stations that is 2904 days total, or ~8 station years of data. </span></span></div> <div style="margin-top:0;margin-bottom:0;"> </div> <div style="margin-top:0;margin-bottom:0;"><span style="font-size:12px">The spreadsheet with the calculation is attached, including which directories I searched over to make the count.</span></div> Encoding: HTML ELCode plain Suppress Email notification Resubmit as new entry

Attachment 1:	Livetime_Estimate.pdf
Attachment 2:	Livetime_Estimate.xlsx
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