Overview

Dataset statistics

Number of variables5
Number of observations357
Missing cells0
Missing cells (%)0.0%
Duplicate rows7
Duplicate rows (%)2.0%
Total size in memory14.1 KiB
Average record size in memory40.4 B

Variable types

Categorical1
Text4

Dataset

Description한국남부발전(주)_설계기술용역 시공도급계약 현황(삼척)에 대한 데이터로 구분, 계약번호, 계약명, 계약자 등의 항목을 제공합니다.
Author한국남부발전(주)
URLhttps://www.data.go.kr/data/15033949/fileData.do

Alerts

Dataset has 7 (2.0%) duplicate rowsDuplicates
구분 is highly imbalanced (83.0%)Imbalance

Reproduction

Analysis started2024-04-06 08:45:11.022115
Analysis finished2024-04-06 08:45:12.560423
Duration1.54 second
Software versionydata-profiling vv4.5.1
Download configurationconfig.json

Variables

구분
Categorical

IMBALANCE 

Distinct2
Distinct (%)0.6%
Missing0
Missing (%)0.0%
Memory size2.9 KiB
시공도급계약
348 
설계기술용역
 
9

Length

Max length6
Median length6
Mean length6
Min length6

Unique

Unique0 ?
Unique (%)0.0%

Sample

1st row설계기술용역
2nd row설계기술용역
3rd row설계기술용역
4th row설계기술용역
5th row설계기술용역

Common Values

ValueCountFrequency (%)
시공도급계약 348
97.5%
설계기술용역 9
 
2.5%

Length

2024-04-06T17:45:12.848644image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/
Histogram of lengths of the category

Common Values (Plot)

2024-04-06T17:45:13.139940image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/
ValueCountFrequency (%)
시공도급계약 348
97.5%
설계기술용역 9
 
2.5%
Distinct54
Distinct (%)15.1%
Missing0
Missing (%)0.0%
Memory size2.9 KiB
2024-04-06T17:45:13.685822image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/

Length

Max length17
Median length11
Mean length11.109244
Min length9

Characters and Unicode

Total characters3966
Distinct characters19
Distinct categories4 ?
Distinct scripts3 ?
Distinct blocks2 ?
The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique41 ?
Unique (%)11.5%

Sample

1st rowC0993-10-2019
2nd rowC0993-10-2021
3rd rowPSC-C-M06
4th rowPSC-C-M30
5th row제2009-3-06호
ValueCountFrequency (%)
제2012-2-03호 240
67.2%
제2010-01-01호 36
 
10.1%
psc-p-11ed01 9
 
2.5%
psc-c-m10 6
 
1.7%
psc-c-m30 5
 
1.4%
psc-c-m06 3
 
0.8%
psc-p-11ed2 3
 
0.8%
제2012-2-02호 3
 
0.8%
4500000076 3
 
0.8%
제2012-2-05호 2
 
0.6%
Other values (44) 47
 
13.2%
2024-04-06T17:45:14.652440image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/

Most occurring characters

ValueCountFrequency (%)
0 847
21.4%
2 803
20.2%
- 667
16.8%
1 476
12.0%
288
 
7.3%
287
 
7.2%
3 271
 
6.8%
C 90
 
2.3%
P 45
 
1.1%
S 33
 
0.8%
Other values (9) 159
 
4.0%

Most occurring categories

ValueCountFrequency (%)
Decimal Number 2511
63.3%
Dash Punctuation 667
 
16.8%
Other Letter 575
 
14.5%
Uppercase Letter 213
 
5.4%

Most frequent character per category

Decimal Number
ValueCountFrequency (%)
0 847
33.7%
2 803
32.0%
1 476
19.0%
3 271
 
10.8%
9 29
 
1.2%
4 26
 
1.0%
8 26
 
1.0%
5 14
 
0.6%
6 13
 
0.5%
7 6
 
0.2%
Uppercase Letter
ValueCountFrequency (%)
C 90
42.3%
P 45
21.1%
S 33
 
15.5%
M 21
 
9.9%
E 12
 
5.6%
D 12
 
5.6%
Other Letter
ValueCountFrequency (%)
288
50.1%
287
49.9%
Dash Punctuation
ValueCountFrequency (%)
- 667
100.0%

Most occurring scripts

ValueCountFrequency (%)
Common 3178
80.1%
Hangul 575
 
14.5%
Latin 213
 
5.4%

Most frequent character per script

Common
ValueCountFrequency (%)
0 847
26.7%
2 803
25.3%
- 667
21.0%
1 476
15.0%
3 271
 
8.5%
9 29
 
0.9%
4 26
 
0.8%
8 26
 
0.8%
5 14
 
0.4%
6 13
 
0.4%
Latin
ValueCountFrequency (%)
C 90
42.3%
P 45
21.1%
S 33
 
15.5%
M 21
 
9.9%
E 12
 
5.6%
D 12
 
5.6%
Hangul
ValueCountFrequency (%)
288
50.1%
287
49.9%

Most occurring blocks

ValueCountFrequency (%)
ASCII 3391
85.5%
Hangul 575
 
14.5%

Most frequent character per block

ASCII
ValueCountFrequency (%)
0 847
25.0%
2 803
23.7%
- 667
19.7%
1 476
14.0%
3 271
 
8.0%
C 90
 
2.7%
P 45
 
1.3%
S 33
 
1.0%
9 29
 
0.9%
4 26
 
0.8%
Other values (7) 104
 
3.1%
Hangul
ValueCountFrequency (%)
288
50.1%
287
49.9%
Distinct66
Distinct (%)18.5%
Missing0
Missing (%)0.0%
Memory size2.9 KiB
2024-04-06T17:45:15.198840image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/

Length

Max length30
Median length29
Mean length22.456583
Min length9

Characters and Unicode

Total characters8017
Distinct characters145
Distinct categories8 ?
Distinct scripts3 ?
Distinct blocks2 ?
The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique48 ?
Unique (%)13.4%

Sample

1st row삼척그린파워 1,2호기 해상교통안전진단 용역
2nd row삼척그린파워 방파제 설계VE 용역
3rd row삼척 1,2호기 주제어설비 구매
4th row삼척 1,2호기 석회석 취급설비 구매
5th row삼척화력 1,2호기 종합설계기술용역 구매오더
ValueCountFrequency (%)
1,2호기 270
24.5%
삼척그린파워 224
20.3%
삼척 53
 
4.8%
건설공사(대우건설 48
 
4.4%
건설공사(지에스건설 48
 
4.4%
삼척그린파우 48
 
4.4%
건설공사(도원이엔씨 48
 
4.4%
건설공사(대림종합건설 48
 
4.4%
건설공사(포스코건설 48
 
4.4%
구매 18
 
1.6%
Other values (87) 248
22.5%
2024-04-06T17:45:16.126742image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/

Most occurring characters

ValueCountFrequency (%)
744
 
9.3%
492
 
6.1%
462
 
5.8%
359
 
4.5%
355
 
4.4%
341
 
4.3%
338
 
4.2%
326
 
4.1%
300
 
3.7%
295
 
3.7%
Other values (135) 4005
50.0%

Most occurring categories

ValueCountFrequency (%)
Other Letter 5784
72.1%
Space Separator 744
 
9.3%
Decimal Number 582
 
7.3%
Other Punctuation 292
 
3.6%
Close Punctuation 290
 
3.6%
Open Punctuation 290
 
3.6%
Connector Punctuation 21
 
0.3%
Uppercase Letter 14
 
0.2%

Most frequent character per category

Other Letter
ValueCountFrequency (%)
492
 
8.5%
462
 
8.0%
359
 
6.2%
355
 
6.1%
341
 
5.9%
338
 
5.8%
326
 
5.6%
300
 
5.2%
295
 
5.1%
295
 
5.1%
Other values (124) 2221
38.4%
Uppercase Letter
ValueCountFrequency (%)
S 6
42.9%
G 6
42.9%
V 1
 
7.1%
E 1
 
7.1%
Decimal Number
ValueCountFrequency (%)
2 291
50.0%
1 291
50.0%
Space Separator
ValueCountFrequency (%)
744
100.0%
Other Punctuation
ValueCountFrequency (%)
, 292
100.0%
Close Punctuation
ValueCountFrequency (%)
) 290
100.0%
Open Punctuation
ValueCountFrequency (%)
( 290
100.0%
Connector Punctuation
ValueCountFrequency (%)
_ 21
100.0%

Most occurring scripts

ValueCountFrequency (%)
Hangul 5784
72.1%
Common 2219
 
27.7%
Latin 14
 
0.2%

Most frequent character per script

Hangul
ValueCountFrequency (%)
492
 
8.5%
462
 
8.0%
359
 
6.2%
355
 
6.1%
341
 
5.9%
338
 
5.8%
326
 
5.6%
300
 
5.2%
295
 
5.1%
295
 
5.1%
Other values (124) 2221
38.4%
Common
ValueCountFrequency (%)
744
33.5%
, 292
 
13.2%
2 291
 
13.1%
1 291
 
13.1%
) 290
 
13.1%
( 290
 
13.1%
_ 21
 
0.9%
Latin
ValueCountFrequency (%)
S 6
42.9%
G 6
42.9%
V 1
 
7.1%
E 1
 
7.1%

Most occurring blocks

ValueCountFrequency (%)
Hangul 5784
72.1%
ASCII 2233
 
27.9%

Most frequent character per block

ASCII
ValueCountFrequency (%)
744
33.3%
, 292
 
13.1%
2 291
 
13.0%
1 291
 
13.0%
) 290
 
13.0%
( 290
 
13.0%
_ 21
 
0.9%
S 6
 
0.3%
G 6
 
0.3%
V 1
 
< 0.1%
Hangul
ValueCountFrequency (%)
492
 
8.5%
462
 
8.0%
359
 
6.2%
355
 
6.1%
341
 
5.9%
338
 
5.8%
326
 
5.6%
300
 
5.2%
295
 
5.1%
295
 
5.1%
Other values (124) 2221
38.4%
Distinct60
Distinct (%)16.8%
Missing0
Missing (%)0.0%
Memory size2.9 KiB
2024-04-06T17:45:16.769145image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/

Length

Max length14
Median length11
Mean length8.1204482
Min length4

Characters and Unicode

Total characters2899
Distinct characters112
Distinct categories5 ?
Distinct scripts3 ?
Distinct blocks2 ?
The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique46 ?
Unique (%)12.9%

Sample

1st row한국해양연구원
2nd row(주)삼영기술
3rd row지멘스 주식회사
4th row삼환기업(주)
5th row한국전력기술(주)
ValueCountFrequency (%)
지에스건설(주 54
14.1%
주)대우건설 49
12.8%
대림종합건설(주 49
12.8%
주)포스코건설 48
12.6%
주)도원이엔씨 48
12.6%
주식회사 21
 
5.5%
대림산업(주)(본사 12
 
3.1%
정상종합건설(주 12
 
3.1%
두산중공업 12
 
3.1%
현대건설(주 11
 
2.9%
Other values (52) 66
17.3%
2024-04-06T17:45:17.921930image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/

Most occurring characters

ValueCountFrequency (%)
350
 
12.1%
( 342
 
11.8%
) 342
 
11.8%
234
 
8.1%
234
 
8.1%
127
 
4.4%
111
 
3.8%
66
 
2.3%
64
 
2.2%
63
 
2.2%
Other values (102) 966
33.3%

Most occurring categories

ValueCountFrequency (%)
Other Letter 2188
75.5%
Open Punctuation 342
 
11.8%
Close Punctuation 342
 
11.8%
Space Separator 25
 
0.9%
Uppercase Letter 2
 
0.1%

Most frequent character per category

Other Letter
ValueCountFrequency (%)
350
16.0%
234
 
10.7%
234
 
10.7%
127
 
5.8%
111
 
5.1%
66
 
3.0%
64
 
2.9%
63
 
2.9%
60
 
2.7%
58
 
2.7%
Other values (97) 821
37.5%
Uppercase Letter
ValueCountFrequency (%)
C 1
50.0%
K 1
50.0%
Open Punctuation
ValueCountFrequency (%)
( 342
100.0%
Close Punctuation
ValueCountFrequency (%)
) 342
100.0%
Space Separator
ValueCountFrequency (%)
25
100.0%

Most occurring scripts

ValueCountFrequency (%)
Hangul 2188
75.5%
Common 709
 
24.5%
Latin 2
 
0.1%

Most frequent character per script

Hangul
ValueCountFrequency (%)
350
16.0%
234
 
10.7%
234
 
10.7%
127
 
5.8%
111
 
5.1%
66
 
3.0%
64
 
2.9%
63
 
2.9%
60
 
2.7%
58
 
2.7%
Other values (97) 821
37.5%
Common
ValueCountFrequency (%)
( 342
48.2%
) 342
48.2%
25
 
3.5%
Latin
ValueCountFrequency (%)
C 1
50.0%
K 1
50.0%

Most occurring blocks

ValueCountFrequency (%)
Hangul 2188
75.5%
ASCII 711
 
24.5%

Most frequent character per block

Hangul
ValueCountFrequency (%)
350
16.0%
234
 
10.7%
234
 
10.7%
127
 
5.8%
111
 
5.1%
66
 
3.0%
64
 
2.9%
63
 
2.9%
60
 
2.7%
58
 
2.7%
Other values (97) 821
37.5%
ASCII
ValueCountFrequency (%)
( 342
48.1%
) 342
48.1%
25
 
3.5%
C 1
 
0.1%
K 1
 
0.1%
Distinct113
Distinct (%)31.7%
Missing0
Missing (%)0.0%
Memory size2.9 KiB
2024-04-06T17:45:18.437401image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/

Length

Max length36
Median length32
Mean length20.131653
Min length9

Characters and Unicode

Total characters7187
Distinct characters174
Distinct categories8 ?
Distinct scripts3 ?
Distinct blocks2 ?
The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique35 ?
Unique (%)9.8%

Sample

1st rowA 삼척-설계기술용역-플랜트설계
2nd rowA 삼척-설계기술용역-플랜트설계
3rd rowBJ08 삼척-주제어/시뮬레이터 및 보조감시설비
4th rowBM22 삼척-석회석 취급설비 설치공사(기계)
5th rowA 삼척-설계기술용역-플랜트설계
ValueCountFrequency (%)
77
 
7.0%
신축 30
 
2.7%
설치공사 24
 
2.2%
기초공사 16
 
1.4%
축조공사 12
 
1.1%
지지물 11
 
1.0%
삼척-전기집진기 10
 
0.9%
마감 10
 
0.9%
제어건물 10
 
0.9%
철골설치공사 10
 
0.9%
Other values (243) 895
81.0%
2024-04-06T17:45:19.441066image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/

Most occurring characters

ValueCountFrequency (%)
748
 
10.4%
C 367
 
5.1%
- 353
 
4.9%
346
 
4.8%
346
 
4.8%
339
 
4.7%
335
 
4.7%
0 255
 
3.5%
229
 
3.2%
211
 
2.9%
Other values (164) 3658
50.9%

Most occurring categories

ValueCountFrequency (%)
Other Letter 4372
60.8%
Space Separator 748
 
10.4%
Uppercase Letter 736
 
10.2%
Decimal Number 718
 
10.0%
Dash Punctuation 353
 
4.9%
Close Punctuation 112
 
1.6%
Open Punctuation 112
 
1.6%
Other Punctuation 36
 
0.5%

Most frequent character per category

Other Letter
ValueCountFrequency (%)
346
 
7.9%
346
 
7.9%
339
 
7.8%
335
 
7.7%
229
 
5.2%
211
 
4.8%
122
 
2.8%
106
 
2.4%
104
 
2.4%
103
 
2.4%
Other values (136) 2131
48.7%
Uppercase Letter
ValueCountFrequency (%)
C 367
49.9%
A 127
 
17.3%
E 89
 
12.1%
M 53
 
7.2%
X 45
 
6.1%
B 28
 
3.8%
J 8
 
1.1%
S 5
 
0.7%
H 5
 
0.7%
P 5
 
0.7%
Other values (2) 4
 
0.5%
Decimal Number
ValueCountFrequency (%)
0 255
35.5%
1 166
23.1%
2 55
 
7.7%
4 45
 
6.3%
3 44
 
6.1%
8 43
 
6.0%
7 32
 
4.5%
5 30
 
4.2%
6 26
 
3.6%
9 22
 
3.1%
Other Punctuation
ValueCountFrequency (%)
/ 35
97.2%
, 1
 
2.8%
Space Separator
ValueCountFrequency (%)
748
100.0%
Dash Punctuation
ValueCountFrequency (%)
- 353
100.0%
Close Punctuation
ValueCountFrequency (%)
) 112
100.0%
Open Punctuation
ValueCountFrequency (%)
( 112
100.0%

Most occurring scripts

ValueCountFrequency (%)
Hangul 4372
60.8%
Common 2079
28.9%
Latin 736
 
10.2%

Most frequent character per script

Hangul
ValueCountFrequency (%)
346
 
7.9%
346
 
7.9%
339
 
7.8%
335
 
7.7%
229
 
5.2%
211
 
4.8%
122
 
2.8%
106
 
2.4%
104
 
2.4%
103
 
2.4%
Other values (136) 2131
48.7%
Common
ValueCountFrequency (%)
748
36.0%
- 353
17.0%
0 255
 
12.3%
1 166
 
8.0%
) 112
 
5.4%
( 112
 
5.4%
2 55
 
2.6%
4 45
 
2.2%
3 44
 
2.1%
8 43
 
2.1%
Other values (6) 146
 
7.0%
Latin
ValueCountFrequency (%)
C 367
49.9%
A 127
 
17.3%
E 89
 
12.1%
M 53
 
7.2%
X 45
 
6.1%
B 28
 
3.8%
J 8
 
1.1%
S 5
 
0.7%
H 5
 
0.7%
P 5
 
0.7%
Other values (2) 4
 
0.5%

Most occurring blocks

ValueCountFrequency (%)
Hangul 4372
60.8%
ASCII 2815
39.2%

Most frequent character per block

ASCII
ValueCountFrequency (%)
748
26.6%
C 367
13.0%
- 353
12.5%
0 255
 
9.1%
1 166
 
5.9%
A 127
 
4.5%
) 112
 
4.0%
( 112
 
4.0%
E 89
 
3.2%
2 55
 
2.0%
Other values (18) 431
15.3%
Hangul
ValueCountFrequency (%)
346
 
7.9%
346
 
7.9%
339
 
7.8%
335
 
7.7%
229
 
5.2%
211
 
4.8%
122
 
2.8%
106
 
2.4%
104
 
2.4%
103
 
2.4%
Other values (136) 2131
48.7%

Correlations

2024-04-06T17:45:20.338267image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/
구분계약번호계약명계약자
구분1.0000.9780.9750.976
계약번호0.9781.0001.0001.000
계약명0.9751.0001.0001.000
계약자0.9761.0001.0001.000

Missing values

2024-04-06T17:45:12.105186image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/
A simple visualization of nullity by column.
2024-04-06T17:45:12.408186image/svg+xmlMatplotlib v3.7.2, https://matplotlib.org/
Nullity matrix is a data-dense display which lets you quickly visually pick out patterns in data completion.

Sample

구분계약번호계약명계약자단위공사명
0설계기술용역C0993-10-2019삼척그린파워 1,2호기 해상교통안전진단 용역한국해양연구원A 삼척-설계기술용역-플랜트설계
1설계기술용역C0993-10-2021삼척그린파워 방파제 설계VE 용역(주)삼영기술A 삼척-설계기술용역-플랜트설계
2설계기술용역PSC-C-M06삼척 1,2호기 주제어설비 구매지멘스 주식회사BJ08 삼척-주제어/시뮬레이터 및 보조감시설비
3설계기술용역PSC-C-M30삼척 1,2호기 석회석 취급설비 구매삼환기업(주)BM22 삼척-석회석 취급설비 설치공사(기계)
4설계기술용역제2009-3-06호삼척화력 1,2호기 종합설계기술용역 구매오더한국전력기술(주)A 삼척-설계기술용역-플랜트설계
5설계기술용역제2009-3-06호삼척화력 1,2호기 종합설계기술용역 구매오더한국전력기술(주)A 삼척-설계기술용역-플랜트설계
6설계기술용역제C0003-09-2005-2삼척 용수공급 타당성조사용역(주)삼안A 삼척-설계기술용역-플랜트설계
7설계기술용역제C0993-09-2006-6호삼척화력 방파제축조 설계기술용역(주)도화엔지니어링A 삼척-설계기술용역-플랜트설계
8설계기술용역제C0993-09-2020-3호삼척 도시기본계획 일부변경 용역(주)진화기술공사A 삼척-설계기술용역-플랜트설계
9시공도급계약제2012-2-02호삼척그린파워1,2호기 방파제 축조공사(경동건설)(주)경동건설XC02 삼척-방파제설치공사(토목)
구분계약번호계약명계약자단위공사명
347시공도급계약제2010-01-01호삼척 그린파워 1,2호기 대비공사(정상)정상종합건설(주)XC07 삼척-기타부대공사(토목)
348시공도급계약제2010-01-01호삼척 그린파워 1,2호기 대비공사(정상)정상종합건설(주)XC06 삼척-냉각수배수로축조공사(토목)
349시공도급계약제2010-01-01호삼척 그린파워 1,2호기 대비공사(정상)정상종합건설(주)XC01 삼척-부지정지공사(토목)
350시공도급계약제2010-01-01호삼척 그린파워 1,2호기 대비공사(정상)정상종합건설(주)XA01 삼척-사택신축공사(건축)
351시공도급계약제2010-01-01호삼척 그린파워 1,2호기 대비공사(정상)정상종합건설(주)XM01 삼척-사택신축공사(기계)
352시공도급계약제2010-01-01호삼척 그린파워 1,2호기 대비공사(정상)정상종합건설(주)XE10 삼척-사택신축공사(전기)
353시공도급계약제2010-01-01호삼척 그린파워 1,2호기 대비공사(정상)정상종합건설(주)XC11 삼척-사택신축공사(토목)
354시공도급계약제2010-01-01호삼척 그린파워 1,2호기 대비공사(정상)정상종합건설(주)XE11 삼척-사택신축공사(통신)
355시공도급계약제2010-01-01호삼척 그린파워 1,2호기 대비공사(정상)정상종합건설(주)XC03 삼척-진입도로공사(토목)
356시공도급계약제2010-01-01호삼척 그린파워 1,2호기 대비공사(정상)정상종합건설(주)XC05 삼척-호안축조공사(토목)

Duplicate rows

Most frequently occurring

구분계약번호계약명계약자단위공사명# duplicates
0설계기술용역제2009-3-06호삼척화력 1,2호기 종합설계기술용역 구매오더한국전력기술(주)A 삼척-설계기술용역-플랜트설계2
1시공도급계약C0993-10-1001삼척그린파워사업구역내군부대이설공사(주) 우일XC04 삼척-군부대이전공사(토목)2
2시공도급계약PSC-C-M06삼척 1,2호기 주제어설비 구매지멘스 주식회사BJ01 삼척-주제어/시뮬레이터 및 보조감시설비 설치공사2
3시공도급계약PSC-C-M10삼척 1,2호기 석탄취급설비 구매_삼성중공업삼성중공업(주)BM14 석탄취급설비 시운전2
4시공도급계약PSC-P-11ED01삼척 1,2호기 보일러 주기기 구매 시공분야_현대건설현대건설(주)AA01 삼척-(보일러설치조건) 기계공사2
5시공도급계약PSC-P-11ED01삼척 1,2호기 보일러 주기기 구매 시공분야_현대건설현대건설(주)AA02 삼척-(보일러설치조건) 전기공사2
6시공도급계약PSC-P-11ED01삼척 1,2호기 보일러 주기기 구매_시공분야(GS건설)지에스건설(주)AA02 삼척-(보일러설치조건) 전기공사2