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Mech Vent Preconditioning - Loads #753

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Mech Vent Preconditioning - Loads #753

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40b37b2
preconditioned to setpoint instead of room temperature
yzhou601 May 5, 2021
6f9515d
Latest results.
May 5, 2021
9359dd4
Merge branch 'master' of https://github.com/NREL/OpenStudio-HPXML int…
yzhou601 May 5, 2021
f1a399c
Merge branch 'mech_vent_precond' of https://github.com/NREL/OpenStudi…
yzhou601 May 5, 2021
822bbd6
Latest results.
May 5, 2021
136c413
Add seasons for precond logic
yzhou601 May 5, 2021
a47f8e5
Latest results.
May 6, 2021
598e235
load reporting for preconditioning
yzhou601 May 11, 2021
515e062
Merge branch 'master' of https://github.com/NREL/OpenStudio-HPXML int…
yzhou601 May 11, 2021
d6abdde
bugfix + format
yzhou601 May 11, 2021
ac6c95f
Latest results.
May 11, 2021
fa5c6eb
Merge branch 'master' of https://github.com/NREL/OpenStudio-HPXML int…
yzhou601 May 13, 2021
735f44d
Merge branch 'master' of https://github.com/NREL/OpenStudio-HPXML int…
shorowit May 14, 2021
f08f747
Merge branch 'mech_vent_precond_energy_only' of https://github.com/NR…
shorowit May 14, 2021
87d7574
Merge branch 'master' of https://github.com/NREL/OpenStudio-HPXML int…
shorowit May 14, 2021
d32a3e5
Merge branch 'mech_vent_precond' of https://github.com/NREL/OpenStudi…
shorowit May 14, 2021
216b73d
Latest results.
May 14, 2021
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26 changes: 23 additions & 3 deletions HPXMLtoOpenStudio/measure.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -2121,7 +2121,7 @@ def self.add_total_loads_output(runner, model, living_zone)
tot_load_sensors[:clg] = OpenStudio::Model::EnergyManagementSystemSensor.new(model, 'Cooling:EnergyTransfer')
tot_load_sensors[:clg].setName('clg_load_tot')

# Need to adjusted E+ EnergyTransfer meters for dehumidifiers
# Need to adjust E+ EnergyTransfer meters for dehumidifiers
intgain_dehumidifier = nil
model.getZoneHVACDehumidifierDXs.each do |e|
next unless e.thermalZone.get.name.to_s == living_zone.name.to_s
Expand All @@ -2138,14 +2138,25 @@ def self.add_total_loads_output(runner, model, living_zone)
program.setName(Constants.ObjectNameTotalLoadsProgram)
program.addLine('Set loads_htg_tot = 0')
program.addLine('Set loads_clg_tot = 0')
# Need to adjust E+ EnergyTransfer meters for mech vent preconditioning
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Adjust total loads read from E+ output meter

# Fixme: is it possible to have cooling in hvac but heating in mech vent preconditioning? How to report load in that case?
# Fixme: Proceed reporting both
model.getEnergyManagementSystemGlobalVariables.sort.each do |ems_var|
next unless ems_var.name.to_s.start_with? 'Precond_'
if ems_var.name.to_s.start_with? 'Precond_HeatingLoad'
program.addLine("Set loads_htg_tot = loads_htg_tot + #{ems_var.name.get}")
else
program.addLine("Set loads_clg_tot = loads_clg_tot + #{ems_var.name.get}")
end
end
program.addLine("If #{liv_load_sensors[:htg].name} > 0")
s = " Set loads_htg_tot = #{tot_load_sensors[:htg].name} - #{tot_load_sensors[:clg].name}"
s = " Set loads_htg_tot = loads_htg_tot + #{tot_load_sensors[:htg].name} - #{tot_load_sensors[:clg].name}"
if not intgain_dehumidifier.nil?
s += " - #{intgain_dehumidifier.name}"
end
program.addLine(s)
program.addLine("ElseIf #{liv_load_sensors[:clg].name} > 0")
s = " Set loads_clg_tot = #{tot_load_sensors[:clg].name} - #{tot_load_sensors[:htg].name}"
s = " Set loads_clg_tot = loads_clg_tot + #{tot_load_sensors[:clg].name} - #{tot_load_sensors[:htg].name}"
if not intgain_dehumidifier.nil?
s += " + #{intgain_dehumidifier.name}"
end
Expand Down Expand Up @@ -2516,6 +2527,15 @@ def self.add_component_loads_output(runner, model, living_zone, liv_load_sensors
mechvent_sensors.each do |sensor|
program.addLine("Set hr_mechvent = hr_mechvent - #{sensor.name}")
end
# Adjust component load reporting for preconditioning
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Adjust component loads read from equipment objects (add preconditioning loads to mechvent subitem).

model.getEnergyManagementSystemGlobalVariables.sort.each do |ems_var|
next unless ems_var.name.to_s.start_with? 'Precond_'
if ems_var.name.to_s.start_with? 'Precond_HeatingLoad'
program.addLine("Set hr_mechvent = hr_mechvent + #{ems_var.name.get}")
else
program.addLine("Set hr_mechvent = hr_mechvent - #{ems_var.name.get}")
end
end
program.addLine('Set hr_ducts = 0')
ducts_sensors.each do |duct_sensors|
s = 'Set hr_ducts = hr_ducts'
Expand Down
4 changes: 4 additions & 0 deletions HPXMLtoOpenStudio/resources/airflow.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -1537,6 +1537,7 @@ def self.calculate_precond_loads(model, infil_program, vent_mech_preheat, vent_m
vent_mech_preheat.each_with_index do |f_preheat, i|
infil_program.addLine("If (OASupInTemp < HtgStp) && (#{clg_ssn_sensor.name} < 1)")
htg_energy_actuator = create_other_equipment_object_and_actuator(model: model, name: "shared mech vent preheating energy #{i}", space: @living_space, frac_lat: 0.0, frac_lost: 1.0, hpxml_fuel_type: f_preheat.preheating_fuel, end_use: Constants.ObjectNameMechanicalVentilationPreconditioning)
htg_load_var = OpenStudio::Model::EnergyManagementSystemGlobalVariable.new(model, "Precond_HeatingLoad_#{i}")
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Global variables created here for load reporting.

hvac_map["#{f_preheat.id}_preheat"] = [htg_energy_actuator.actuatedComponent.get]
infil_program.addLine(" Set Qpreheat = #{UnitConversions.convert(f_preheat.average_oa_unit_flow_rate, 'cfm', 'm^3/s').round(4)}")
if [HPXML::MechVentTypeERV, HPXML::MechVentTypeHRV].include? f_preheat.fan_type
Expand All @@ -1557,11 +1558,13 @@ def self.calculate_precond_loads(model, infil_program, vent_mech_preheat, vent_m
infil_program.addLine('Else')
infil_program.addLine(' Set PreHeatingWatt = 0.0')
infil_program.addLine('EndIf')
infil_program.addLine("Set #{htg_load_var.name.get} = PreHeatingWatt * ZoneTimeStep*3600")
infil_program.addLine("Set #{htg_energy_actuator.name} = PreHeatingWatt / #{f_preheat.preheating_efficiency_cop}")
end
vent_mech_precool.each_with_index do |f_precool, i|
infil_program.addLine("If (OASupInTemp > ClgStp) && (#{clg_ssn_sensor.name} > 0)")
clg_energy_actuator = create_other_equipment_object_and_actuator(model: model, name: "shared mech vent precooling energy #{i}", space: @living_space, frac_lat: 0.0, frac_lost: 1.0, hpxml_fuel_type: f_precool.precooling_fuel, end_use: Constants.ObjectNameMechanicalVentilationPreconditioning)
clg_load_var = OpenStudio::Model::EnergyManagementSystemGlobalVariable.new(model, "Precond_CoolingLoad_#{i}")
hvac_map["#{f_precool.id}_precool"] = [clg_energy_actuator.actuatedComponent.get]
infil_program.addLine(" Set Qprecool = #{UnitConversions.convert(f_precool.average_oa_unit_flow_rate, 'cfm', 'm^3/s').round(4)}")
if [HPXML::MechVentTypeERV, HPXML::MechVentTypeHRV].include? f_precool.fan_type
Expand All @@ -1582,6 +1585,7 @@ def self.calculate_precond_loads(model, infil_program, vent_mech_preheat, vent_m
infil_program.addLine('Else')
infil_program.addLine(' Set PreCoolingWatt = 0.0')
infil_program.addLine('EndIf')
infil_program.addLine("Set #{clg_load_var.name.get} = PreCoolingWatt * ZoneTimeStep*3600")
infil_program.addLine("Set #{clg_energy_actuator.name} = PreCoolingWatt / #{f_precool.precooling_efficiency_cop}")
end
end
Expand Down
4 changes: 2 additions & 2 deletions workflow/tests/base_results/results.csv
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Original file line number Diff line number Diff line change
Expand Up @@ -39,8 +39,8 @@ base-bldgtype-multifamily-shared-cooling-tower-only-water-loop-heat-pump.xml,26.
base-bldgtype-multifamily-shared-generator.xml,25.45,22.6,0.78,0.0,14.17,0.0,0.0,0.0,0.0,0.02,2.26,0.41,9.67,0.0,0.0,2.03,0.0,0.21,0.0,0.0,0.0,0.0,2.22,0.0,0.0,0.32,0.37,1.51,1.53,0.0,2.11,2.79,0.0,0.0,0.0,0.0,0.0,0.0,0.0,-2.84,0.78,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,14.17,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.74,6.49,9.52,0.58,0.0,0.0,0.0,0.01,6188.0,6177.0,8.63,6.98,0.0,-0.01,2.61,0.0,0.0,0.41,1.46,0.0,-0.01,0.0,-0.34,1.64,0.0,0.51,0.0,0.0,-5.57,0.0,-0.0,-0.86,0.0,0.0,-0.04,3.33,0.0,-0.0,0.0,-0.33,-0.65,-3.11,-0.17,0.0,0.0,8.44,1354.0,998.0,11594.0,3210.0
base-bldgtype-multifamily-shared-ground-loop-ground-to-air-heat-pump.xml,27.48,27.48,0.0,0.0,0.0,0.0,0.0,0.0,0.21,1.95,1.27,1.3,9.67,0.0,0.0,2.03,0.0,0.21,0.0,0.0,0.0,0.0,2.22,0.0,0.0,0.32,0.37,1.51,1.53,0.0,2.11,2.79,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.74,6.49,9.52,0.58,0.0,0.0,0.0,0.01,6362.0,6265.0,8.63,6.98,0.0,-0.01,2.61,0.0,0.0,0.41,1.46,0.0,-0.01,0.0,-0.34,1.64,0.0,0.51,0.0,0.0,-5.57,0.0,-0.0,-0.86,0.0,0.0,-0.04,3.33,0.0,-0.0,0.0,-0.33,-0.65,-3.11,-0.17,0.0,0.0,8.44,1354.0,998.0,11594.0,3210.0
base-bldgtype-multifamily-shared-laundry-room.xml,15.69,15.69,13.33,0.0,0.0,0.0,0.0,0.0,0.0,0.02,2.19,0.4,0.0,0.0,0.0,2.03,0.0,0.21,0.0,0.0,0.0,0.0,2.22,0.0,0.0,0.32,0.37,1.51,1.53,0.0,2.11,2.79,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.81,12.51,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.77,6.18,9.54,0.57,0.0,0.0,0.0,0.01,2882.0,2943.0,3.78,7.01,0.0,-0.01,2.64,0.0,0.0,0.41,1.44,0.0,-0.01,0.0,-0.33,2.08,0.0,0.0,0.0,0.0,-5.45,0.0,-0.0,-0.82,0.0,0.0,-0.03,3.34,0.0,-0.0,0.0,-0.32,-0.8,-3.07,0.0,0.0,0.0,7.95,1355.0,998.0,11403.0,3157.0
base-bldgtype-multifamily-shared-mechvent-multiple.xml,29.85,29.85,20.36,0.0,0.0,0.0,0.0,0.0,0.0,0.21,1.73,0.25,9.71,0.0,0.0,2.03,0.0,0.21,3.75,0.95,0.17,0.0,2.22,0.0,0.0,0.32,0.37,1.51,1.53,0.0,2.11,2.79,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,8.18,0.0,0.0,0.0,12.17,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,7.74,4.01,9.52,0.62,0.0,0.0,0.0,0.0,6412.0,6364.0,8.45,8.37,0.0,-0.01,2.83,0.0,0.0,0.4,0.44,0.0,-0.01,0.0,-0.25,0.15,0.0,12.34,0.0,0.0,-7.97,0.0,-0.0,-0.01,0.0,0.0,0.07,3.31,0.0,-0.01,0.0,-0.24,-0.01,-1.57,-3.77,0.0,0.0,6.08,1354.0,998.0,11593.0,3210.0
base-bldgtype-multifamily-shared-mechvent-preconditioning.xml,26.71,26.71,5.6,0.0,0.0,0.0,0.0,0.0,0.0,0.04,2.02,0.34,9.68,0.0,0.0,2.03,0.0,0.21,1.49,0.0,0.05,0.0,2.22,0.0,0.0,0.32,0.37,1.51,1.53,0.0,2.11,2.79,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,1.64,0.0,0.0,0.0,3.95,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,1.55,5.3,9.52,0.59,0.0,0.0,0.0,0.01,6242.0,6237.0,8.8,7.21,0.0,-0.01,2.78,0.0,0.0,0.41,1.19,0.0,-0.01,0.0,-0.27,1.71,0.0,2.35,0.0,0.0,-6.6,0.0,-0.0,-0.5,0.0,0.0,0.0,3.37,0.0,-0.01,0.0,-0.26,-0.43,-2.57,-1.68,0.0,0.0,7.42,1354.0,998.0,11593.0,3210.0
base-bldgtype-multifamily-shared-mechvent-multiple.xml,29.85,29.85,20.36,0.0,0.0,0.0,0.0,0.0,0.0,0.21,1.73,0.25,9.71,0.0,0.0,2.03,0.0,0.21,3.75,0.95,0.17,0.0,2.22,0.0,0.0,0.32,0.37,1.51,1.53,0.0,2.11,2.79,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,8.18,0.0,0.0,0.0,12.17,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,22.34,4.67,9.52,0.62,0.0,0.0,0.0,0.0,6412.0,6364.0,8.45,8.37,0.0,-0.01,2.83,0.0,0.0,0.4,0.44,0.0,-0.01,0.0,-0.25,0.15,0.0,26.92,0.0,0.0,-7.97,0.0,-0.0,-0.01,0.0,0.0,0.07,3.31,0.0,-0.01,0.0,-0.24,-0.01,-1.57,-3.13,0.0,0.0,6.08,1354.0,998.0,11593.0,3210.0
base-bldgtype-multifamily-shared-mechvent-preconditioning.xml,26.71,26.71,5.6,0.0,0.0,0.0,0.0,0.0,0.0,0.04,2.02,0.34,9.68,0.0,0.0,2.03,0.0,0.21,1.49,0.0,0.05,0.0,2.22,0.0,0.0,0.32,0.37,1.51,1.53,0.0,2.11,2.79,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,1.64,0.0,0.0,0.0,3.95,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,5.19,5.48,9.52,0.59,0.0,0.0,0.0,0.01,6242.0,6237.0,8.8,7.21,0.0,-0.01,2.78,0.0,0.0,0.41,1.19,0.0,-0.01,0.0,-0.27,1.71,0.0,5.86,0.0,0.0,-6.6,0.0,-0.0,-0.5,0.0,0.0,0.0,3.37,0.0,-0.01,0.0,-0.26,-0.43,-2.57,-1.64,0.0,0.0,7.42,1354.0,998.0,11593.0,3210.0
base-bldgtype-multifamily-shared-mechvent.xml,26.68,26.68,4.09,0.0,0.0,0.0,0.0,0.0,0.0,0.11,1.98,0.33,9.69,0.0,0.0,2.03,0.0,0.21,1.49,0.0,0.0,0.0,2.22,0.0,0.0,0.32,0.37,1.51,1.53,0.0,2.11,2.79,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,4.09,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,3.87,5.16,9.52,0.6,0.0,0.0,0.0,0.01,6254.0,6240.0,10.43,7.88,0.0,-0.01,2.75,0.0,0.0,0.38,0.68,0.0,-0.01,0.0,-0.18,1.65,0.0,5.71,0.0,0.0,-7.03,0.0,-0.0,-0.37,0.0,0.0,-0.0,3.1,0.0,-0.0,0.0,-0.17,-0.38,-2.57,-1.43,0.0,0.0,7.0,1354.0,998.0,11593.0,3210.0
base-bldgtype-multifamily-shared-pv.xml,25.45,1.01,0.78,0.0,0.0,0.0,0.0,0.0,0.0,0.02,2.26,0.41,9.67,0.0,0.0,2.03,0.0,0.21,0.0,0.0,0.0,0.0,2.22,0.0,0.0,0.32,0.37,1.51,1.53,0.0,2.11,2.79,0.0,0.0,0.0,0.0,0.0,0.0,-24.43,0.0,0.78,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.74,6.49,9.52,0.58,0.0,0.0,0.0,0.01,6188.0,6177.0,8.63,6.98,0.0,-0.01,2.61,0.0,0.0,0.41,1.46,0.0,-0.01,0.0,-0.34,1.64,0.0,0.51,0.0,0.0,-5.57,0.0,-0.0,-0.86,0.0,0.0,-0.04,3.33,0.0,-0.0,0.0,-0.33,-0.65,-3.11,-0.17,0.0,0.0,8.44,1354.0,998.0,11594.0,3210.0
base-bldgtype-multifamily-shared-water-heater-recirc.xml,16.79,16.79,13.48,0.0,0.0,0.0,0.0,0.0,0.0,0.03,2.19,0.39,0.0,1.1,0.0,2.03,0.0,0.21,0.0,0.0,0.0,0.0,2.22,0.0,0.0,0.32,0.37,1.51,1.53,0.0,2.11,2.79,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.97,12.51,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.92,6.2,9.54,0.57,0.0,0.0,0.0,0.01,2931.0,3065.0,8.78,7.01,0.0,-0.01,2.65,0.0,0.0,0.41,1.4,0.0,-0.01,0.0,-0.34,2.0,0.0,0.51,0.0,0.0,-5.71,0.0,-0.0,-0.79,0.0,0.0,-0.03,3.33,0.0,-0.0,0.0,-0.33,-0.74,-3.05,-0.17,0.0,0.0,8.09,1355.0,998.0,11403.0,3157.0
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