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sbu062 2022-06-27 11:02 Rev.: 12638

some check stats
{{{
From: Sergey Budaev <sergey.budaev@uib.no>
To: Øyvind Johan Korsøen <oyvind.korsoen@bluegrove.com>
Subject: Re: Data
Date: Mon, 27 Jun 2022 12:58:07 +0200
Organization: Universitetet i Bergen

I have looked at the data. A couple of questions:

1. Am I right that these columns 1:24 is the fish density at
the depth 1:24 m? at the time defined by DateTime?

2. What is the valid range of the fish density? Is it within 0:1?
There are a few cases of very high values, e.g.

```
> summary(echodata_first_period$dens_max)
Min. 1st Qu. Median Mean 3rd Qu. Max. NA's
0.0000 0.1826 0.2655 0.2774 0.3568 42.8144 1714
```

The maximum value of data row max'es is 42.8144. Is it a data error?

Then I need a data quality assurance checking for each data (a
script to check and remove/impute wring data).

Thanks!

Best wishes,

Sergey
}}}

12 lines of code changed in 1 file:

• branches/budaev/RSTAT/NF2W_data: echodata-1.Rmd (+12)

sbu062 2022-06-27 10:31 Rev.: 12637

fix, was density

3 lines of code changed in 1 file:

• branches/budaev/RSTAT/NF2W_data: echodata-1.Rmd (+3 -10)

sbu062 2022-06-27 10:28 Rev.: 12636

get median depth as `depth_median`

13 lines of code changed in 1 file:

• branches/budaev/RSTAT/NF2W_data: echodata-1.Rmd (+13)

sbu062 2022-06-27 10:14 Rev.: 12635

basic data import for echodata 1

4 lines of code changed in 1 file:

• branches/budaev/RSTAT/NF2W_data: echodata-1.Rmd (+4 -15)

sbu062 2022-06-27 10:10 Rev.: 12634

autogenerated rmd

29 lines of code changed in 1 file:

• branches/budaev/RSTAT/NF2W_data: echodata-1.Rmd (new 29)

sbu062 2022-06-27 09:58 Rev.: 12631

project file

13 lines of code changed in 1 file:

• branches/budaev/RSTAT/NF2W_data: NF2W_data.Rproj (new 13)