December to February have big pressure swings as depressions come in from the North Atlantic. Temperatures from late April to September are our 'summer', then a rapid drop in temperatures, but sub-zero ( Celsius) temperatures are rare and uually overnight.
The station saves data in the form of monthly files. I use 10 or 30 minute intervals usually. Also recorded are indoor temperature, outdoor humidity; wind direction and speed. Since the staion is close to a building and immediately above a dark-painted fence that gets full sun until mid afternoon the readings need to be 'taken with a pinch of salt', although consistent in themselves. It is possible to calculate cloud-base from the data- it is not directly measurable without access to lidar!
I'm interested in the periodicity of the depressions our trans-Atlantic cousins send towards the UK. Global warming seems to be giving us bigger extremes and less regularity through the seasons. I can plot things like daily temperature range, or time interval between successive depressions, or see if they correlate with the ( rather suspect) wind direction. And scope for unusual ( ?3D?) data presentations..
I used to download ( with LB from a website) a synoptic chart everyday. Unfortunately most modern sites use more sophisticated web frontends now which are harder to scrape.
By using LB I can very easily look at data over any chosen period. A typical program is shown- but I've used many variations.
Most of my data was on a 150G drive in a laptop, later re-purposed as an external drive. By a moments inattention- forgetting that Linux doesn't always use 'sba' for the external drive- I accidentally cloned a 8G Raspberry Pi image over the start of the drive. To recover data I had to use software that locates individual files, but doesn't know their names or types, unless that is, as with GIF, BMP, etc, encoded at the start-of-file. So I wrote various LB programs to identify my files via length, preamble or enclosed data. The remaining missing data is from battery change or other short episodes- or someone aiming a hosepipe at the rain sensor...
' ******************************************** ' ********** cumulusYearGraphs.bas ******** ' ********** ******** ' ********** tenochtitlanuk ******** ' ********** 14/05/16 ******** ' ******************************************** ' Creates custom graphs from data saved by weather stations. ' Station software updates a hard disk file whenever it is run, ' or at regular intervals if left running. ' This program reads, displays & saves data in ways the station prog. doesn't. ' The images/files saved can be used on a web page since converted to gif. ' The file is of ASCII data in csv form, defined below. '1 Date in the form dd/mm/yy '2 Current time '3 Current temperature '4 Current humidity ' Current dewpoint ' Current wind speed '7 Recent (10-minute) high gust '8 Average wind bearing '9 Current rainfall rate ' Total rainfall today so far '11 Current sea level pressure ' Total rainfall counter as held by the station ' Inside temperature ' Inside humidity ' Current gust (i.e. 'Latest') ' Wind chill ' Heat Index ' Oct 2010 to May 2016 ' To-dos:- ' Save the bmp's with appropriate names. nomainwin WindowWidth =1500 WindowHeight = 700 UpperLeftX = 20 UpperLeftY = 20 graphicbox #w.gb, 0, 55, 1480, 640 statictext #w.st, "filename", 10, 02, 1100, 16 statictext #w.st2, "dateTime", 10, 25, 1100, 16 open "Cumulus datafile reader for all months" for window as #w #w.gb "trapclose quit" #w.gb "size 1" #w.st "!font courier 12" monthName$ ="Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec" monthLen$ ="31 28 31 30 31 30 31 31 30 31 30 31" ' ______________________________________________________________________ for year =10 to 16 ' data for years 2010 to 2016... #w.gb "cls" for month =1 to 12 skip =0 if year =10 and month <10 then skip =1: goto [bypass] if year =16 and month > 5 then skip =1: goto [bypass] ' #w.gb "up ; goto "; xd; " 0 ; down ; color yellow ; goto "; xd; " 640 ; up ; goto "; xd; " 610 ; color black" name$ =word$( monthName$, month, " ") +str$( year) fn$ =name$ +"log.txt" #w.st fn$; open fn$ for input as #file [data] line input #file, row$ ' Extract row of 11 data items. date$ =word$( row$, 1, ",") ' Extract date and separate into d/m/y. days =val( mid$( date$, 1, 2)) months =val( mid$( date$, 4, 2)) years =val( mid$( date$, 7, 2)) tim$ =word$( row$, 2, ",") ' Extract time and separate into hrs/mins. hrs =val( mid$( tim$, 1, 2)) mins =val( mid$( tim$, 4, 2)) minutes =mins +60 *( hrs +24 *days) ' Calc. minutes since day start. yearDay =days +hrs /24 for cnt =1 to months -1 yearDay =yearDay +val( word$( monthLen$, cnt, " ")) next cnt if years mod 4 =0 and months >1 then yearDay =yearDay +1 xPos =10 +int( 4 *yearDay) #w.st2 date$; " "; tim$; T =val( word$( row$, 3, ",")) ' outside temperature in rough range 0 --> 25 #w.gb "color red ; up ; goto "; xPos; " "; 280 -T *8 #w.gb "down ; goto "; xPos; " 280" P =val( word$( row$, 11, ",")) -990 ' atmospheric pressure range 990 -->1040 #w.gb "color cyan ; up ; goto "; xPos; " "; 440 -P *3 #w.gb "down ; goto "; xPos; " 550" R =val( word$( row$, 9, ",")) ' rainfall rate range 0 --> 3 #w.gb "color darkblue ; up ; goto "; xPos; " "; 598 -R *5 #w.gb "down ; goto "; xPos; " 599" scan if skip =1 then [data] if skip =0 and not( eof( #file)) then [data] close #file [bypass] next month #w.gb "flush" #w.gb "getbmp scr 0 0 1480 640" pfb$ =str$( year) +"X.bmp" 'bmpsave "scr", pfb$ unloadbmp "scr" 'timer 5000, [continue] 'wait [continue] 'timer 0 next year ' ______________________________________________________________________ wait sub quit h$ close #h$ end end sub