If you find this page useful and would like to be notified of changes made to this page, start by inputting your email below.
powered by ChangeDetection
m |
m |
||
Line 3: | Line 3: | ||
{| class="wikitable welldetails" width="95%" | {| class="wikitable welldetails" width="95%" | ||
| Well ID: 34-111-22261 | | Well ID: 34-111-22261 | ||
− | | style="height=100%; align=center" rowspan="17" | {{#display_map: 39. | + | | style="height=100%; align=center" rowspan="17" | {{#display_map: 39.57, -81.2 | width=100% | height=100% }} |
|- | |- | ||
| Country: United States | | Country: United States | ||
Line 9: | Line 9: | ||
| State: Ohio | | State: Ohio | ||
|- | |- | ||
− | | County: [[ | + | | County: [[Washington_County,_Ohio|Washington]] |
|- | |- | ||
− | | Municipality: [[ | + | | Municipality: [[Ludlow_Township,_Washington_County,_Ohio|Ludlow Township]] |
|- | |- | ||
| Operator Name: [[LUDLOW OIL & GAS COMPANY LLC]] | | Operator Name: [[LUDLOW OIL & GAS COMPANY LLC]] | ||
Line 29: | Line 29: | ||
| Final Drill Date: 1981-05-15 | | Final Drill Date: 1981-05-15 | ||
|- | |- | ||
− | | Well Total Depth: 2615 ft | + | | Well Total Depth: 2615.00 ft |
|- | |- | ||
| Configuration: Vertical | | Configuration: Vertical | ||
|- | |- | ||
− | | Latitude: 39. | + | | Latitude: 39.570000 |
|- | |- | ||
− | | Longitude: -81. | + | | Longitude: -81.200000 |
|} | |} | ||
For data sources see<ref>{{cite web | For data sources see<ref>{{cite web | ||
| title = Risk Based Data Management System - Well, tblLocational, tblPlugWell, tblInspection, tblCivilTownships and tblPad Tables | | title = Risk Based Data Management System - Well, tblLocational, tblPlugWell, tblInspection, tblCivilTownships and tblPad Tables | ||
|publisher = [[Ohio Department of Natural Resources]] | |publisher = [[Ohio Department of Natural Resources]] | ||
− | | date = | + | | date = 2020-11-16 |
| url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | | url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | ||
− | | accessdate = | + | | accessdate = 2020-11-16 }}</ref> |
== Well History == | == Well History == | ||
{| class="wikitable sortable" width="95%" | {| class="wikitable sortable" width="95%" | ||
Line 85: | Line 85: | ||
| title = Risk Based Data Management System - Well and WellHistry Tables | | title = Risk Based Data Management System - Well and WellHistry Tables | ||
|publisher = [[Ohio Department of Natural Resources]] | |publisher = [[Ohio Department of Natural Resources]] | ||
− | | date = | + | | date = 2020-11-16 |
| url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | | url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | ||
− | | accessdate = | + | | accessdate = 2020-11-16 }}</ref> |
== Perforation Treatments == | == Perforation Treatments == | ||
{| class="wikitable sortable" width="95%" | {| class="wikitable sortable" width="95%" | ||
Line 96: | Line 96: | ||
|- | |- | ||
| 2006-09-11 | | 2006-09-11 | ||
+ | | style="text-align: right;" | 2517 | ||
+ | | style="text-align: right;" | 2555 | ||
+ | | style="text-align: right;" | 15 | ||
+ | |- | ||
+ | | | ||
+ | | style="text-align: right;" | 2517 | ||
+ | | style="text-align: right;" | 2555 | ||
+ | | style="text-align: right;" | 15 | ||
+ | |- | ||
+ | | | ||
| style="text-align: right;" | 2517 | | style="text-align: right;" | 2517 | ||
| style="text-align: right;" | 2555 | | style="text-align: right;" | 2555 | ||
Line 104: | Line 114: | ||
| title = Risk Based Data Management System - Perfs Table | | title = Risk Based Data Management System - Perfs Table | ||
|publisher = [[Ohio Department of Natural Resources]] | |publisher = [[Ohio Department of Natural Resources]] | ||
− | | date = | + | | date = 2020-11-16 |
| url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | | url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | ||
− | | accessdate = | + | | accessdate = 2020-11-16 }}</ref> |
<!--== Fracking Activities == | <!--== Fracking Activities == | ||
==== Fracking Jobs ==== | ==== Fracking Jobs ==== | ||
Line 161: | Line 171: | ||
| title = Risk Based Data Management System - tblStimulation Table | | title = Risk Based Data Management System - tblStimulation Table | ||
|publisher = [[Ohio Department of Natural Resources]] | |publisher = [[Ohio Department of Natural Resources]] | ||
− | | date = | + | | date = 2020-11-16 |
| url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | | url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | ||
− | | accessdate = | + | | accessdate = 2020-11-16 }}</ref> |
== Production Data == | == Production Data == | ||
{| class="wikitable sortable" width="95%" | {| class="wikitable sortable" width="95%" | ||
Line 174: | Line 184: | ||
| 1984 | | 1984 | ||
| [[COLLINS-MCGREGOR OPERATING CO]] | | [[COLLINS-MCGREGOR OPERATING CO]] | ||
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 1985 | | 1985 | ||
| [[COLLINS-MCGREGOR OPERATING CO]] | | [[COLLINS-MCGREGOR OPERATING CO]] | ||
− | | style="text-align: right;" | 278 | + | | style="text-align: right;" | 278.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 1986 | | 1986 | ||
| [[COLLINS-MCGREGOR OPERATING CO]] | | [[COLLINS-MCGREGOR OPERATING CO]] | ||
− | | style="text-align: right;" | 2067 | + | | style="text-align: right;" | 2067.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 1987 | | 1987 | ||
| [[COLLINS-MCGREGOR OPERATING CO]] | | [[COLLINS-MCGREGOR OPERATING CO]] | ||
− | | style="text-align: right;" | 1548 | + | | style="text-align: right;" | 1548.00 |
− | | style="text-align: right;" | 89 | + | | style="text-align: right;" | 89.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 1988 | | 1988 | ||
| [[COLLINS-MCGREGOR OPERATING CO]] | | [[COLLINS-MCGREGOR OPERATING CO]] | ||
− | | style="text-align: right;" | 1281 | + | | style="text-align: right;" | 1281.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 1989 | | 1989 | ||
| [[COLLINS-MCGREGOR OPERATING CO]] | | [[COLLINS-MCGREGOR OPERATING CO]] | ||
− | | style="text-align: right;" | 1696 | + | | style="text-align: right;" | 1696.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 1990 | | 1990 | ||
| [[COLLINS-MCGREGOR OPERATING CO]] | | [[COLLINS-MCGREGOR OPERATING CO]] | ||
− | | style="text-align: right;" | 1481 | + | | style="text-align: right;" | 1481.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 1991 | | 1991 | ||
| [[PPG INDUSTRIES INC]] | | [[PPG INDUSTRIES INC]] | ||
− | | style="text-align: right;" | 1037 | + | | style="text-align: right;" | 1037.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 1993 | | 1993 | ||
| [[ROCKWELL RESOURCES INC]] | | [[ROCKWELL RESOURCES INC]] | ||
− | | style="text-align: right;" | 457 | + | | style="text-align: right;" | 457.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 1994 | | 1994 | ||
| [[ROCKWELL RESOURCES INC]] | | [[ROCKWELL RESOURCES INC]] | ||
− | | style="text-align: right;" | 308 | + | | style="text-align: right;" | 308.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 2006 | | 2006 | ||
| [[LUDLOW OIL & GAS COMPANY LLC]] | | [[LUDLOW OIL & GAS COMPANY LLC]] | ||
− | | style="text-align: right;" | 1095 | + | | style="text-align: right;" | 1095.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 2008 | | 2008 | ||
| [[LUDLOW OIL & GAS COMPANY LLC]] | | [[LUDLOW OIL & GAS COMPANY LLC]] | ||
− | | style="text-align: right;" | 180 | + | | style="text-align: right;" | 180.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 2011 | | 2011 | ||
| [[LUDLOW OIL & GAS COMPANY LLC]] | | [[LUDLOW OIL & GAS COMPANY LLC]] | ||
− | | style="text-align: right;" | 274 | + | | style="text-align: right;" | 274.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 2012 | | 2012 | ||
| [[LUDLOW OIL & GAS COMPANY LLC]] | | [[LUDLOW OIL & GAS COMPANY LLC]] | ||
− | | style="text-align: right;" | 1098 | + | | style="text-align: right;" | 1098.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 366 | | style="text-align: right;" | 366 | ||
|- | |- | ||
| 2013 | | 2013 | ||
| [[LUDLOW OIL & GAS COMPANY LLC]] | | [[LUDLOW OIL & GAS COMPANY LLC]] | ||
− | | style="text-align: right;" | 341 | + | | style="text-align: right;" | 341.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 2014 | | 2014 | ||
| [[LUDLOW OIL & GAS COMPANY LLC]] | | [[LUDLOW OIL & GAS COMPANY LLC]] | ||
− | | style="text-align: right;" | 311 | + | | style="text-align: right;" | 311.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 2015 | | 2015 | ||
| [[LUDLOW OIL & GAS COMPANY LLC]] | | [[LUDLOW OIL & GAS COMPANY LLC]] | ||
− | | style="text-align: right;" | 210 | + | | style="text-align: right;" | 210.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 2016 | | 2016 | ||
| [[LUDLOW OIL & GAS COMPANY LLC]] | | [[LUDLOW OIL & GAS COMPANY LLC]] | ||
− | | style="text-align: right;" | 167 | + | | style="text-align: right;" | 167.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 2017 | | 2017 | ||
| [[LUDLOW OIL & GAS COMPANY LLC]] | | [[LUDLOW OIL & GAS COMPANY LLC]] | ||
− | | style="text-align: right;" | 194 | + | | style="text-align: right;" | 194.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
| 2018 | | 2018 | ||
| [[LUDLOW OIL & GAS COMPANY LLC]] | | [[LUDLOW OIL & GAS COMPANY LLC]] | ||
− | | style="text-align: right;" | 178 | + | | style="text-align: right;" | 178.00 |
− | | style="text-align: right;" | 0 | + | | style="text-align: right;" | 0.00 |
| style="text-align: right;" | 365 | | style="text-align: right;" | 365 | ||
|- | |- | ||
Line 296: | Line 306: | ||
| title = Risk Based Data Management System - Production Table - Oil and Gas Data | | title = Risk Based Data Management System - Production Table - Oil and Gas Data | ||
|publisher = [[Ohio Department of Natural Resources]] | |publisher = [[Ohio Department of Natural Resources]] | ||
− | | date = | + | | date = 2020-11-16 |
| url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | | url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | ||
− | | accessdate = | + | | accessdate = 2020-11-16 }}</ref> |
<ref>{{cite web | <ref>{{cite web | ||
| title = Combined Production - Oil and Gas Data | | title = Combined Production - Oil and Gas Data | ||
|publisher = [[Ohio Department of Natural Resources]] | |publisher = [[Ohio Department of Natural Resources]] | ||
− | | date = | + | | date = 2020-11-16 |
| url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | | url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | ||
− | | accessdate = | + | | accessdate = 2020-11-16 }}</ref> |
== Waste Data == | == Waste Data == | ||
{| class="wikitable sortable" | {| class="wikitable sortable" | ||
Line 437: | Line 447: | ||
| title = Risk Based Data Management System - Production Table - Brine Data | | title = Risk Based Data Management System - Production Table - Brine Data | ||
|publisher = [[Ohio Department of Natural Resources]] | |publisher = [[Ohio Department of Natural Resources]] | ||
− | | date = | + | | date = 2020-11-16 |
| url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | | url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | ||
− | | accessdate = | + | | accessdate = 2020-11-16 }}</ref> |
<ref>{{cite web | <ref>{{cite web | ||
| title = Combined Production - Brine Data | | title = Combined Production - Brine Data | ||
|publisher = [[Ohio Department of Natural Resources]] | |publisher = [[Ohio Department of Natural Resources]] | ||
− | | date = | + | | date = 2020-11-16 |
| url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | | url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | ||
− | | accessdate = | + | | accessdate = 2020-11-16 }}</ref> |
== Inspection Data == | == Inspection Data == | ||
==== Inspections Performed ==== | ==== Inspections Performed ==== | ||
Line 460: | Line 470: | ||
| No Violations | | No Violations | ||
| On this day, I found the well equipped with 4.5 inch diameter casing, 2 inch diameter tubing with the valves open, and produced by means of a pumping unit with an electric motor. There is a drip tank, vertical separator, and (1) 100 barrel steel tank. The identification needs updated and a dike needs constructed around the tank and separator. The production records are current. Company will be contacted and a follow-up inpsection will be conducted. | | On this day, I found the well equipped with 4.5 inch diameter casing, 2 inch diameter tubing with the valves open, and produced by means of a pumping unit with an electric motor. There is a drip tank, vertical separator, and (1) 100 barrel steel tank. The identification needs updated and a dike needs constructed around the tank and separator. The production records are current. Company will be contacted and a follow-up inpsection will be conducted. | ||
+ | |- | ||
+ | | 46803672 | ||
+ | | 2017-11-9 0:00: | ||
+ | | PW | ||
+ | | No Violations | ||
+ | | 0.70 | ||
|- | |- | ||
|} | |} | ||
Line 474: | Line 490: | ||
| title = Risk Based Data Management System - tblInspection, tblInspFail and tblinspFlDesc Tables | | title = Risk Based Data Management System - tblInspection, tblInspFail and tblinspFlDesc Tables | ||
|publisher = [[Ohio Department of Natural Resources]] | |publisher = [[Ohio Department of Natural Resources]] | ||
− | | date = | + | | date = 2020-11-16 |
| url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | | url = http://wellwiki.org/wiki/Ohio_Oil_and_Gas_Data_Sources | ||
− | | accessdate = | + | | accessdate = 2020-11-16 }}</ref> |
==References== | ==References== | ||
<references/> | <references/> | ||
__NOEDITSECTION__ | __NOEDITSECTION__ | ||
[[Category:Ohio Wells]] | [[Category:Ohio Wells]] |
Well ID: 34-111-22261 | Loading map...
{"type":"SATELLITE","minzoom":false,"maxzoom":false,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"mappingservice":"googlemaps3","width":"100%","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"wmsoverlay":false,"copycoords":false,"static":false,"zoom":14,"layers":[],"controls":["pan","zoom","type","scale","streetview","rotate"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"resizable":false,"kmlrezoom":false,"poi":true,"markercluster":false,"clustergridsize":60,"clustermaxzoom":20,"clusterzoomonclick":true,"clusteraveragecenter":true,"clusterminsize":2,"imageoverlays":[],"kml":[],"gkml":[],"searchmarkers":"","enablefullscreen":false,"scrollwheelzoom":false,"locations":[{"text":"","title":"","link":"","lat":39.57,"lon":-81.2,"icon":""}]} |
Country: United States | |
State: Ohio | |
County: Washington | |
Municipality: Ludlow Township | |
Operator Name: LUDLOW OIL & GAS COMPANY LLC | |
Well Pad ID: | |
Farm/Lease Name: HOWELL - HEIRS | |
License Status: Producing | |
License Date: 1980-12-31 | |
Spud Date: 1981-04-07 | |
Spud Drilling Contractor: | |
Final Drill Date: 1981-05-15 | |
Well Total Depth: 2615.00 ft | |
Configuration: Vertical | |
Latitude: 39.570000 | |
Longitude: -81.200000 |
For data sources see[1]
Well Status | Well Status Date | Comment |
---|---|---|
CO | 1980-12-31 | 42 COLLINS-MCGREGOR OPER CO GeoDate 12/31/80 |
Oil and Gas | 1980-12-31 | Issued Date 12/31/80 Expired Date Acres 0120500 Tool Type CT Proposed Formation OHIO SHALE Proposed Depth 00000 Proposed Drill Depth 00000 |
Original Spud | 1981-04-07 | |
Completed | 1981-05-15 | |
Reached Total Depth | 1981-05-15 | |
CO | 1992-09-01 | 1264 ROCKWELL RESOURCES INC GeoDate 12/31/80 |
Change of Owner | 2006-01-06 | Operator changed from 1264, ROCKWELL RESOURCES INC to 4938, LUDLOW OIL & GAS |
Record Last Modified | 2013-10-03 |
For data sources see[2]
Perforation Date | Interval Top (ft) | Interval Base (ft) | Number of Shots |
---|---|---|---|
2006-09-11 | 2517 | 2555 | 15 |
2517 | 2555 | 15 | |
2517 | 2555 | 15 |
For data sources see[3]
Stimulation Date | Chemical Agent | Chemical Agent Concentration (%) | Fracking Fluid Volume | Mass of Proppant Used (lb) | Fracking Company | Comments |
---|---|---|---|---|---|---|
H2O | 0 | 66000 Gal | 45000 | |||
N2 | 0 | 175 Mscf | 0 |
For data sources see[4]
Period | Operator Name | Waste Type | Quantity (bbl) | Production Days |
---|---|---|---|---|
1984 | COLLINS-MCGREGOR OPERATING CO | Brine | 0 | 365 |
1985 | COLLINS-MCGREGOR OPERATING CO | Brine | 0 | 365 |
1986 | COLLINS-MCGREGOR OPERATING CO | Brine | 0 | 365 |
1987 | COLLINS-MCGREGOR OPERATING CO | Brine | 0 | 365 |
1988 | COLLINS-MCGREGOR OPERATING CO | Brine | 0 | 365 |
1989 | COLLINS-MCGREGOR OPERATING CO | Brine | 0 | 365 |
1990 | COLLINS-MCGREGOR OPERATING CO | Brine | 0 | 365 |
1991 | PPG INDUSTRIES INC | Brine | 0 | 365 |
1993 | ROCKWELL RESOURCES INC | Brine | 0 | 365 |
1994 | ROCKWELL RESOURCES INC | Brine | 0 | 365 |
2006 | LUDLOW OIL & GAS COMPANY LLC | Brine | 0 | 365 |
2008 | LUDLOW OIL & GAS COMPANY LLC | Brine | 0 | 365 |
2011 | LUDLOW OIL & GAS COMPANY LLC | Brine | 0 | 365 |
2012 | LUDLOW OIL & GAS COMPANY LLC | Brine | 0 | 366 |
2013 | LUDLOW OIL & GAS COMPANY LLC | Brine | 0 | 365 |
2014 | LUDLOW OIL & GAS COMPANY LLC | Brine | 0 | 365 |
2015 | LUDLOW OIL & GAS COMPANY LLC | Brine | 0 | 365 |
2016 | LUDLOW OIL & GAS COMPANY LLC | Brine | 0 | 365 |
2017 | LUDLOW OIL & GAS COMPANY LLC | Brine | 0 | 365 |
2018 | LUDLOW OIL & GAS COMPANY LLC | Brine | 0 | 365 |
Inspection ID | Inspection Date | Inspection Type | Inspection Result | Inspection Comments |
---|---|---|---|---|
0046803672 | 2017-11-09 | Production Wells | No Violations | On this day, I found the well equipped with 4.5 inch diameter casing, 2 inch diameter tubing with the valves open, and produced by means of a pumping unit with an electric motor. There is a drip tank, vertical separator, and (1) 100 barrel steel tank. The identification needs updated and a dike needs constructed around the tank and separator. The production records are current. Company will be contacted and a follow-up inpsection will be conducted. |
46803672 | 2017-11-9 0:00: | PW | No Violations | 0.70 |
For data sources see[9]