Scottish Marine and Freshwater Science Report Volume 9 No 14

This is table 2 included in the report. It is also included in the Appendix as table A2.

The column headings are:

Drone_id
Description: Model of drone
Discrete/Continuous/categorical:Categorical
Range or Levels: 3 levels/types of drone

Flight_session_number
Description: flight in which drone was detected by plane mounted LiDAR
Discrete/Continuous/categorical: Categorical
Range or Levels: 7 levels, values 1-7
Notes:Combine flight number with drone id to make unique

Position_of_drone
Description: whether drone was in a fixed position or moving
Discrete/Continuous/categorical: Categorical
Range or Levels: 2 levels, Fixed or In movement

Height_band
Description: height of the drone
Discrete/Continuous/categorical: Categorical
Range or Levels: 8 levels, from 10m to 80m
Notes:Height band in 10m bands

Difference_GPS
Description: difference between the GPS measurement of drone height and the measurement from LiDAR
Discrete/Continuous/categorical:Continuous
Range or Levels:From -0.94 to 0.71
Notes:One drone model not recording these values (DJI Matrice)

Difference_photogrammetry
Description: difference between the GPS measurement of drone height and the measurement from photogrammetry
Discrete/Continuous/categorical: Continuous
Range or Levels:From 0.17 to 0.33
Notes:Only two measurements

The variables in sediment_data.csv describe the contaminant data in sediment used in the 2017 assessment of the UK's Clean Seas Environment Monitoring Programme. This file gives more details about each variable.

seriesID
Description: timeseries identifier
Unit:
Type: categorical
Levels: 2505
Note: identifies the data (a station / contaminant combination) that were grouped together into a timeseries and modelled to assess status and trends

station
Description: station identifier
Unit:
Type: categorical
Levels: 109
Note: monitoring station – links to station information in sediment_station.csv

year
Description: monitoring year
Unit:
Type: discrete
Range: 1999, 2016
Note: for some data suppliers, monitoring is in winter and e.g. sampling in December 2015 and January 2016 would be regarded as having come from the same monitoring year

date
Description: sampling date
Unit:
Type: discrete
Range: 1999-01-18, 2016-10-26
Note:

sampleID
Description: sample identifier
Unit:
Type: categorical
Levels: 4044
Note:

matrix
Description: sample matrix
Unit:
Type: categorical
Levels: SED63, SEDTOT
Note: see ICES reference codes for MATRX

group
Description: contaminant group
Unit:
Type: categorical
Levels: BDE, CB, metal, PAH.parent
Note:
BDE = polybrominated diphenyl ethers
CB = polychlorinated biphenyls
PAH.parent = parent polycyclic aromatic hydrocarbons

determinand
Description: contaminant
Unit:
Type: categorical
Levels: 26
Note: see ICES reference codes for PARAM; data submitted as CHRTR have been relabelled as CHR

metoa
Description: method of chemical analysis
Unit:
Type: categorical
Levels: 16
Note: see ICES reference codes for METOA

Description: concentration of contaminant
Unit: mg kg-1 dw (metals), ug kg^{-1} dw (organics)
Type: continuous
Range: 0.00027, 314000
Note: all contaminant concentrations are expressed on a dry weight basis

qflag
Description: less-than qualifier for concentration measurement
Unit:
Type: categorical
Levels: "", "<"
Note:
“<” indicates a value below the limit o