  "zgb": administrative area covering several blocks of buildings. This is not the orgiginal ZGB number but a modified one for data privacy reasons.
  "token": unique token to identify questionnair                                     
  "block_blockno" Number to identify the block where the household is located.This is not the orgiginal block number but a modified one for data privacy reasons.                            
  "stratum" location of the household in a zaehlgebiet with below the median population density or above. "lower" or "upper"
  "stratumNumberHH" number of households of the population in the stratum
  "Datum": date the questionnaire returned by mail
  "days": days until the questionnair returned 
  "X1_heat_vienna": Have you ever experienced a heat wave in Vienna?: "yes"/"no"/NA
  "X2_arbeit_freien": Are you working outdoors? "yes"/"no"/NA
  "X3_effect_heat_wohl_wohn": Did the last heat have an impact on your well being at home?: 1=positive, 2= rather positive, 3=neither-nor, 4= rather negative, 5= negative
  "X3_effect_heat_wohl_str": Did the last heat have an impact on your well being on the road?  1=positive, 2= rather positive, 3=neither-nor, 4= rather negative, 5= negative
  "X3_effect_heat_wohl_arb": Did the last heat have an impact on your well being at work (if appicable)?  1=positive, 2= rather positive, 3=neither-nor, 4= rather negative, 5= negative
  "X4a_trees_cool" Have you ever experienced the cooling effect under a tree?  yes/no; NA for scenario fountains
  "X4b_used_fountain": Have you used a drinking fountains in the past 12 months? yes/no; NA for scenario trees
  "X5_heat_mitigated_1": Which measures did you take against the heat during the last heat wave? If: "Left Vienna for several days" = 1 otherwise 0
  "X5_heat_mitigated_2" Which measures did you take against the heat during the last heat wave? If: "Left Vienna for the night" = 1 otherwise 0                       
  "X5_heat_mitigated_3" Which measures did you take against the heat during the last heat wave? If: "Spent more evenings outdoors" = 1 otherwise 0                       
  "X5_heat_mitigated_4" Which measures did you take against the heat during the last heat wave? If: "Spent less time outdoors during the day" = 1 otherwise 0                     
  "X5_heat_mitigated_5"Which measures did you take against the heat during the last heat wave? If: "Use a fan" = 1 otherwise 0                       
  "X5_heat_mitigated_6" Which measures did you take against the heat during the last heat wave? If: "Closed Curtains" = 1 otherwise 0                       
  "X5_heat_mitigated_7" Which measures did you take against the heat during the last heat wave? If: "Used air-conditioning at home" = 1 otherwise 0                       
  "X5_heat_mitigated_8" Which measures did you take against the heat during the last heat wave? If: aird flat in morning and at night = 1 otherwise 0
  "X5_heat_mitigated_9" Which measures did you take against the heat during the last heat wave? If: "Turned off electric applicances" = 1 otherwise 0                       
  "X5_heat_mitigated_10"Which measures did you take against the heat during the last heat wave? If: "re-sceduled working time" = 1 otherwise 0
  "X5_heat_mitigated_11" Which measures did you take against the heat during the last heat wave? If: "worked less" = 1 otherwise 0                       
  "X5_heat_mitigated_12" Which measures did you take against the heat during the last heat wave? If: "Changed diet" = 1 otherwise 0                                             
  "X5_heat_mitigated_13" Which measures did you take against the heat during the last heat wave? If: "Drank more" = 1 otherwise 0                       
  "X5_heat_mitigated_14" Which measures did you take against the heat during the last heat wave? If: "wore lighter coloured cloths" = 1 otherwise 0                                     "X5_heat_mitigated_15" Which measures did you take against the heat during the last heat wave? If: "used headdress" = 1 otherwise 0                       
  "X5_heat_mitigated_Sonstiges"Which measures did you take against the heat during the last heat wave? Other:....               
  "X6_heat_measures_1" Which measures against heat waves have you noticed in Vienna? If "Trees on the street" = 1 otherwise 0
  "X6_heat_measures_2"  Which measures against heat waves have you noticed in Vienna? If "facade greening" = 1 otherwise 0                        
  "X6_heat_measures_3"  Which measures against heat waves have you noticed in Vienna? If "rails greening" = 1 otherwise 0
  "X6_heat_measures_4"  Which measures against heat waves have you noticed in Vienna? If "green along sideway" = 1 otherwise 0
  "X6_heat_measures_5"  Which measures against heat waves have you noticed in Vienna? If "roof greeing" = 1 otherwise 0
  "X6_heat_measures_6" Which measures against heat waves have you noticed in Vienna? If "shading of sideway" = 1 otherwise 0
  "X6_heat_measures_7" Which measures against heat waves have you noticed in Vienna? If "lightening of street surfaces" = 1 otherwise 0
  "X6_heat_measures_8"  Which measures against heat waves have you noticed in Vienna? If "Access to water (e.g. Danube)" = 1 otherwise 0                        
  "X6_heat_measures_9"  Which measures against heat waves have you noticed in Vienna? If "drinking fountains" = 1 otherwise 0
  "X6_heat_measures_10"  Which measures against heat waves have you noticed in Vienna? If "Air-conditioning in public transport" = 1 otherwise 0                  
  "X6_heat_measures_11"  Which measures against heat waves have you noticed in Vienna? If "hints for behaviour" = 1 otherwise 0
  "X6_heat_measures_Sonstiges"  Which measures against heat waves have you noticed in Vienna? Other: ...
  "X7_fees_vienna": Please estimate how much your household pays on average for operating costs per month (excluding electricity, gas, heating-oil): 0 = "0 to 50 Euro" 51="51-100 Euro" 101="101-200 Euro" 201="201-300 Euro" 301="301-500 Euro" 500="more than 500 Euor"  wn="Don't know", NA= No answer
  "X7_fees_vienna_cont" variable "X7_fees_vienna" transformed int continuous variable by taking the mean value of the interval
  "X8_trees_yes" Do you consider the described measure as reasonable? 1=yes 0=no; NA for scenarios fountains and both or if no answer 
  "X8_fountain_yes" Do you consider the described measure as reasonable? 1=yes 0=no; NA for scenarios trees and both or if no answer
  "X8_beide_yes"    Do you consider the described measure as reasonable? 1=yes 0=no; NA for scenarios trees and fountains or if no answer
  "WTPl" lower bound of intervall respondent is willing to pay, 0 if: X8_trees_yes=0 or X8_fountain_yes=0 or X8_both_yes=0 or if lower bound of interval is 0
  "WTPu" upper bound of intervall respondent is willing to pay, 0 if: X8_trees_yes=0 or X8_fountain_yes=0 or X8_both_yes=0
  "WTPm" mean between upper and lower bound of intervall respondent is willing to pay, 0 if: X8_trees_yes=0 or X8_fountain_yes=0 or X8_both_yes=0
  "WTPl_tree" lower bound of intervall respondent is willing to pay, NA if scenario fountains or both or if X8_trees_yes=0
  "WTPu_tree" upper bound of intervall respondent is willing to pay, NA if scenario fountains or both or if X8_trees_yes=0
  "WTPm_tree" mean between upper and lower bound of intervall respondent is willing to pay, NA if scenario fountains or both or if X8_trees_yes=0
  "WTPl_foun" lower bound of intervall respondent is willing to pay, NA if scenario trees or both or if X8_fountain_yes=0
  "WTPu_foun" upper bound of intervall respondent is willing to pay, NA if scenario trees or both or if X8_fountain_yes=0
  "WTPm_foun" upper bound of intervall respondent is willing to pay, NA if scenario trees or both or if X8_fountain_yes=0
  "WTPl_both" lower bound of intervall respondent is willing to pay, NA if scenario trees or fountains or if X8_beide_yes=0
  "WTPu_both" upper bound of intervall respondent is willing to pay, NA if scenario trees or fountains or if X8_beide_yes=0
  "WTPm_both" upper bound of intervall respondent is willing to pay, NA if scenario trees or fountains or if X8_beide_yes=0
  "X8a_valuation_treesEqual0" 0=considers scenario as reasonable and willing to pay >1, 1= considers scenario as reasonable but is not willing to pay at least 1 Euro/month, 9999= not consider measure as reasonable, NA=scenarios foutains or both 
  "X8a_valuation_fountEqual0" 0=considers scenario as reasonable and willing to pay >1, 1= considers scenario as reasonable but is not willing to pay at least 1 Euro/month, 9999= not consider measure as reasonable, NA=scenarios trees or both
  "X8a_valuation_bothEqual0"  0=considers scenario as reasonable and willing to pay >1, 1= considers scenario as reasonable but is not willing to pay at least 1 Euro/month, 9999= not consider measure as reasonable, NA=scenario trees or fountains
  "X8b_zero_bid_1": Those who consider the measure as reasonable but say their maximum WTP not minimum 1 Euro: Why is your WTP zero? If: "I object additional fees" = 1 otherwise 0,
  "X8b_ObjectFee": The same as "X8b_zero_bid_1" but differnt coding: 1= if respondent does consider measure as reasonable but is not willing to pay at least one Euro and the reason is objection of fees. 99= all other cases (e.g. other scenario, is willing to pay, has other reason why WTP is not at least 1 Euro)
  "X8b_zero_bid_2" Those who consider the measure as reasonable but say their maximum WTP is not minimum 1 Euro: Why is your WTP zero? If: "I cannot afford more" = 1 otherwise 0
  "X8b_CannotAfford" The same as "X8b_zero_bid_2" but differnt coding: 1= if respondent does consider measure as reasonable but is not willing to pay at least one Euro and the reason is that he/she cannot affort it. 99= all other cases (e.g. other scenario, is willing to pay, has other reason why WTP is not at least 1 Euro)
  "X8b_zero_bid_3" Those who consider the measure as reasonable but say their maximum WTP is not minimum 1 Euro: Why is your WTP zero? If: "The city should pay for it" = 1 otherwise 0
  "X8b_CityShouldPay" The same as "X8b_zero_bid_3" but differnt coding: 1= if respondent does consider measure as reasonable but is not willing to pay at least one Euro and the reason is that he/she thinks the city should pay for it. 99= all other cases (e.g. other scenario, is willing to pay, has other reason why WTP is not at least 1 Euro)                         
  "X8b_zero_bid_4" "X8b_zero_bid_3" Those who consider the measure as reasonable but say their maximum WTP is not minimum 1 Euro: Why is your WTP zero? If: "Others should pay, please name who..." = 1 otherwise 0
  "X8b_zero_bid_Sonstiges"  Those who consider the measure as reasonable but say their maximum WTP not mimimum 1 Euro: Why is your WTP zero? Other ...
  "X8c_wtp_ratio_trees": How would you split the contribution between financing trees and fountains: % for trees. NA for scenario trees or fountains and if no answer was given
  "X8c_wtp_ratio_fountain" How would you split the contribution between financing trees and fountains: % for fountains. NA for scenario trees or fountains and if no answer was given                    
  "X9_NotaffectedByHeat": 1 = respondent does not consider the measure as reasonable (i.e."X8_xxx_yes"="no") because he/she is not affected by heat. 99 = otherwise
  "X9_DontLikeFountains"  1 = respondent does not consider the measure as reasonable (i.e."X8_xxx_yes"="no") because he/she doesn't like fountains. 99 = otherwise                    
  "X9_FountainsDontBeatHeat" 1 = respondent does not consider the measure as reasonable (i.e."X8_xxx_yes"="no") because fountains don't help to beat the heat. 99 = otherwise                    
  "X9_DontLikeTreesInCity" 1 = respondent does not consider the measure as reasonable (i.e."X8_xxx_yes"="no") because he/she doesn't like trees in the city. 99 = otherwise                                        
  "X9_TreesDontBeatHeat"  1 = respondent does not consider the measure as reasonable (i.e."X8_xxx_yes"="no") because trees don't beat the heat. 99 = otherwise                                        
  "X9_ObjectReductionParking"   1 = respondent does not consider the measure as reasonable (i.e."X8_xxx_yes"="no") because he/she objects the reduction of praking lots. 99 = otherwise                                                         
  "X9_trees_no_Sonstiges"       Other reasosn for not considering trees as reasonabel measure (in German)              
  "X9_fount_no_Sonstiges"       Other reasosn for not considering fountains as reasonabel measure (in German)              
  "X9_beide_no_Sonstiges"       Other reasosn for not considering trees or fountains as reasonabel measure (in German)              
  "X10_debrief_joint_QuestionUnderstandable" I fully understood the description of the valuation question: 1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree  
  "X10_debrief_joint_OwnUtility" When answering the valuation question I thought about my own utility: 1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree  
  "X10_debrief_joint_OthersUtility" When answering the valuation question I thought about the utility of others (e.g. tourists, inhabitants): 1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree             
  "X10_debrief_joint_FavourHeatmeasures" Generally I am in favour of earmarked fees for measures against heat: 1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree  
  "X10_debrief_joint_TreesAppropriate" Trees are appropriate to reduce the burden of heat: 1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree          
  "X10_debrief_joint_MoreTreesLessCarprakGood": I like the idea of more trees and less parking lots in my district: 1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree   
  "X10_debrief_joint_TreesPosImpactCity": The scenery of the city would improve with more trees: 1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree  
  "X10_debrief_joint_DontNeedMoreTreesMyArea" I do not need more trees in my living area: 1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree  
  "X10_debrief_joint_DontNeedMoreTreesVienna" I do not need more trees in Vienna: 1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree  
  "X10_debrief_joint_FountainsHelpBearHeat" Fountains are appropriate to reduce the burden of heat: 1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree  
  "X10_debrief_joint_EnoughFountainsVienna" There are already enough drinking fountains in Vienna:1=agree, 2= rather agree 3= partly 4= rather disagree 5 = disagree     
  "age"  age in years of the respondent
  "ageCategories"  0_30 ="0-30 years" 31-60="31-60 year" 60-100 ="60-100 years"
  "gender"  m="male", w="female"                                
  "nationality" AT="Austria" CH="Switzerland" CZ="Czech Republic" D="Germany" FIN="Finland" S="Spain" SK="Slovakia" TR="Turkey" RO="Romania" BG="Bulgary" I and IT="Italy"
  "education" highest level of education: 1= "mandatory school", 2="Lehre", 3="Specialized school" 4="A-levels" 5="University degree"
  "education2" highest level of education: 1= "mandatory school or Lehre", 2="Specialized school" 3="A-levels" 4="University degree"                                 
  "universitydegree": respondent holds university degree Yes/No
  "hh_persons": Number of persons living in household
  "hh_persons1Binary" dummy for 1 person household
  "hh_persons2Binary" dummy for 2 persons household
  "hh_persons3Binary" dummy ofr household with three or more members
  "unter16": number of persons living in household and are below 16 years of age
  "hh_persons_STATaust": Number of persons living in household: 1= 1 Person, 2= 2 Persons, 3= 3Persons, 4= 4 Persons, 5=5 or more persons
  "hh_grownups": Number of persons older than 15 living in the household
  "hitzeschutz": Are you or another person particluarly vulnerable to heat (high aged, young children, ...) yes/no/NA
  "pension" Is respondent retired? yes/no
  "ehrenamt" Are you doing voluntary work? Yes/No                                  
  "car" How many cars are there in your household? "none" "one" "two or more"
  "carAtleastone" How many cars are there in your household? "none" "atLeastone"               "carTwoormore" How many cars are there in your household? "noneorOne" "twoOrmore"
  "carspace"  Does your household have a private car space? "no" "no car" "yes""
  "carNoPark" Does your household have a car but no private car space? If care but no car space =1 otherwise =0
  "dogs" Is there a dog in your household? "yes" "no" occationally
  "dogOwn" Is there permanently a dog in your household? "yes" "no"
  "personal_incom_cont" Personal income in Euro (as the middle value of the cagegories to chose from)
  "personal_incom_cont1000" Monthly personal net income in 1000 Euro (as the middle value of the cagegories to chose from)                 
  "personal_incom_quartil" Monthly personal net income quartile of the population in which the respondent falls
  "hh_incom_cont" Monthly household net income in Euro (as the middle value of the cagegories to chose from)                            
  "hh_incom_cont1000" Monthly household net income in 1000 Euro (as the middle value of the cagegories to chose from)
  "hh_incom_aequi" Monthly household net equivalence income in Euro (as the middle value of the cagegories to chose from)
  "hh_equivPersons" Equivalence persons of the household (used to calculate equivalence income)
  "hh_incom_equ_percentil" Monthly household net equivalence income quartile of the population in which the respondent falls               
  "income5years" What do you think will your income be like in 5 years? "same", "lower", "higher"
  "block_parkdist_m" distance of the block to the next park in meter
  "block_tree_m2" number of trees in the block per square meter                             
  "treeDensityClasses" If 1 the number of trees per square meter in block is lower than the median if 2 above the median.
  "beruf_1" You are "apprentice (Lehrling)" 1 if true and 0 otherwise
  "beruf_2" You are "Employed type Arbeiter" 1 if true and 0 otherwise               
  "beruf_3" You are "Employed type Angestellter" 1 if true and 0 otherwise  
  "beruf_4" You are "Self-employed" 1 if true and 0 otherwise  
  "beruf_5" You are "Student at university" 1 if true and 0 otherwise  
  "beruf_6" You are "Pupil" 1 if true and 0 otherwise  
  "beruf_7" You are "Retiered" 1 if true and 0 otherwise                                     
  "beruf_8" You are "currently not in a job" 1 if true and 0 otherwise                      
  "beruf_Sonstiges" "Other:..."                           
  "einkommensbezieher" How many persons in the household have a regular income (including transfers)?
  "contact_info"  Provided contact information yes/no (contact information not shown)                           
  "scenario"  The scenario the respondent was described: "trees" "fountains" "both"                                
  "leveltrees" levels of trees in the described scenario: 50 for 50% more trees, 10 for 10% more trees and NA for the scenario fountains
  "parkpl" The percentag change in public parking lots in the respondent's living area as a consequence of more trees.values. Values between 1 and 25.5. For the scenario fountains all values are NA                                   
  "levelfoun" the change in drinking fountains. "um die Hlfte erhht" for 50% more, "verdoppelt" for 100% more. NA's for the scenario trees
  "levelboth": 'tree10founDoub'= 10% more trees and 100% more fountains; 'tree10founHalf' = 10% more trees and 50% more fountains;  'tree50founDoub' = 50% more trees and 100% more fountains; 'tree50founHalf' = 50% more trees and 50% more fountains; NA for the scenario "trees" and "fountains"
  "absolute_trees" absolute value of trees after the additional trees would have been added. Either  150000 or 200000. NA for scenario fountains
  "effect_foun" Reduction in average walking distance to the next fountain in minutes as described in the scenario. Eiterh 5 or 7. NA in the scenario trees.
  "online" the questionnair was returned online=1, the questionnair was returned by paper mail =0
  






  
  
  
  
