Quick Plots:

With the quick plots, you don't have to go through the whole form to get a plot of last data or last GLE.
Parameters are chosen to match to the most common requests:

Last data

GLE #



Stations List

Stations colors: Using the form, just click on the color box next to the station name to change this station color*
You can also affect the same color to all stations (one color button) or reset all colors (reset colors).

 AATB=  Alma-Ata B (R=6.69)
 APTY=  Apatity (R=0.65)
 ATHN=  Athens (R=8.53)
 ARNM=  Aragats (R=7.1)
 NANM=  Nor-Amberd (R=7.1)
 BKSN=  Baksan (R=5.7)
 ESOI=  Emilio Segre Obs. Israel (R=10.75)
 IRKT=  Irkustk (R=3.64)
 IRK2=  Irkustk2 (R=3.64)
 JUNG1=  IGY Jungfraujoch (R=4.49)
 JUNG=  NM64 Jungfraujoch (R=4.49)
 KERG=  Kerguelen (R=1.14)
 KIEL=  Kiel (R=2.36)
 LMKS=  Lomnicky Stit (R=3.84)
 MCRL=  Mobile Cosmic Ray Laboratory (R=2.46)
 MGDN=  Magadan (R=2.1)
 MOSC=  Moscow (R=2.43)
 MRNY=  Mirny (R=0.03)
 NRLK=  Norilsk (R=0.63)
 NVBK=  Novosibirsk (R=2.91)
 OULU=  Oulu (R=0.81)
 ROME=  Rome (R=6.27)
 TERA=  Terre Adélie (R=0.01)
 TXBY=  Tixie Bay (R=0.48)
 YKTK=  Yakutsk (R=1.65)
*javascript should be enabled on your browser



Date Selection

Last days OR

Select this option if you want to retrieve the most recent data of NMDB

From     To      OR

Select this option if you want to retrieve data for a specific time period: give the start date and end date

GLE number   OR

Select this option if you want to retrieve the data corresponding to a specific Ground Level Event.
The start-time of the plot is given by the pre-increase period of the GLE. The duration of the event can be modified in the options.

Forbush decrease date: 

Select this option if you want to retrieve the data corresponding to a specific Forbush decrease.
The start-time of the plot is given by the date and time of the onset minus 1 hour.



Overplot Option:

Corrected for efficiency Corrected for pressure
Uncorrected Pressure

With this option you can plot together, for one station, multiple time series.
For example, choose uncorrected in the data type form and pressure in the overplot form.
If you choose to overplot pressure, an new axis will be displayed on the right.
If more than one station have been selected, an error message will be displayed.
For each time serie you can define your own prefered color:
Using the form, just click on the color box next to the serie's name*.
You can also use the color transparency (see style options) if some plots overlap.




NMDB tables:

Revised original
Original
1 hour validated

NMDB database is constituted of 3 tables for each station. The 1 hour table holds the validated 1 hour values. Since there is a delay related to the validation, this table may not be updated with the most recent values. Original values table holds the raw data, as it is recorded in real-time. Some automated tests run over the original data and eventual corrections are written in the revised table.




Time resolution:

Time resolution

Modify the time resolution: "best" will give you the best time resolution available in the specified table, usually 1 minute for recent data. This is the default. In the case you decrease time resolution, data will be average from the original resolution.
Important notice: in order to reduce computation time and to display the results in a fast manner, values may be automatically averaged to a lower time resolution and/or could be retrieved from the 1hour table, depending on the query size. Check the plot title or the log file.
Example query 1: 1min time resolution for 1year and 1 single station => 1min values averaged over 30mins.
Example query 2: 1min time resolution for 6months and 8 stations => 1hour values averaged over 2hours.




Scaling Options:

Ignore anomalous values for scaling:
Select this option to discard the most extreme values for the automatic scaling of the plot
(calculation using the MAD, see below).
 
Relative scale:
This option will either:
  • Display the increase in % above the mean instead of counts/s (one station)
  • or display time series in parallel, with a fixed offset between them (multiple stations)
In the first case, a mean value is computed from values in [median + n*MAD, median - n*MAD]
where MAD is the Median Absolute Deviation. In the second case the same mean value "M"
is computed for each time series "T". What you get on the plot is: n * offset + T * ( level / M ),
where "offset" and "level" are arbitrarily set to 4 and 20 (you can change the default offset), "n"=0,1,2,3...
Example for 3 stations:
Tkiel plot = 0+Tkiel*20/Mkiel
Toulu plot = 4+Toulu*20/Moulu
Tkerg plot = 8+Tkerg*20/Mkerg
 
Interval between parallel plots:
The offset defined above.
 
Specify your own Y axis scale:
Define your own limits for the Y axis, the min and the max. You can define
either min or max or both. The option "ignore anomalous values" will not be taken into account in this case.
 



Event Options:

Adjust pre-increase level:
In the case you want to plot a specific GLE or FD, this option will adjust plots from all stations to a
common level (pre-increase level). The values are then given as the increase in % above this level. This option
is not compatible with "ignore anomalous values for scaling".
By default the GLE duration is set to 10 hours. By "duration" we mean time after the end of the baseline interval,
a GLE usually starts within the next hour.
The baseline for FD is given by the hour before the event. The default duration is arbitrarily computed as
2.5*tmin+5 (tmin=time from the onset to FD minimum).
 
Normalize flux to 1
Every time serie is scaled so that the maximum equal 1.
 
Specify the event duration:
You can set the duration parameter to any integer between 1 hour and 99 hours.



Style options (under construction!)

Ascii options (under construction!)

Fractional year
the date timestamp in the ascii file will be eg 1996.4285 instead of 1996-06-05 20:00:00
The leap years are taken into account in the calculation.