>On 12/13/2013 4:46 AM, rob stone wrote: >> The only fly in the ointment with this is a rain gauge. If you don't >> empty it each day the actual rainfall is the difference between >> readings.
>(somewhat off topic) >The electronic rain gauges I've seen have all been tip-bucket. they >measure each 0.01" (or equiv metric unit) at a time, and the rain total >is counter based, the weather station software automatically rolls over >daily, weekly, monthly totals, also tracks 'last 24 hours' which is a >rolling total. >the one I have has a 'teeter totter' rocker, each side of it is a >'bucket', when 0.01" of precip. comes down the funnel into the currently >high side of the teeter, it flips over to the other side, dumping that >0.01" and a magnet on the side of the teeter registers a pulse on a >nearby coil. now the other side fills, and it tips back >we've had 1.40" total at my house since the rainy season started in >August 1. we should be getting that much or more weekly this time of >year. this will be the 3rd year of draught on the central coast ;((( >best design for multiple time series *I've* seen is RRDTOOL, which is an >updated version of the classic MRTG. this is /not/ SQL. Hello, (out of the topic also) NetCDF , SCIDB Regards On Friday, December 13, 2013 7:55 PM, John R Pierce <pie...@hogranch.com> wrote: On 12/13/2013 4:46 AM, rob stone wrote: > The only fly in the ointment with this is a rain gauge. If you don't > empty it each day the actual rainfall is the difference between > readings. (somewhat off topic) The electronic rain gauges I've seen have all been tip-bucket. they measure each 0.01" (or equiv metric unit) at a time, and the rain total is counter based, the weather station software automatically rolls over daily, weekly, monthly totals, also tracks 'last 24 hours' which is a rolling total. the one I have has a 'teeter totter' rocker, each side of it is a 'bucket', when 0.01" of precip. comes down the funnel into the currently high side of the teeter, it flips over to the other side, dumping that 0.01" and a magnet on the side of the teeter registers a pulse on a nearby coil. now the other side fills, and it tips back we've had 1.40" total at my house since the rainy season started in August 1. we should be getting that much or more weekly this time of year. this will be the 3rd year of draught on the central coast ;((( best design for multiple time series *I've* seen is RRDTOOL, which is an updated version of the classic MRTG. this is /not/ SQL. -- john r pierce 37N 122W somewhere on the middle of the left coast -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
