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Data Table

How to Read the Data Table

  1. The data chart is organized by year, starting with the most recent.

  2. Ozone injury is reported in code numbers. The numbers are 0-3:
      0 = no ozone injury
      1 = very little ozone injury (1%-15%)
      2 = medium injury (16%-50%)
      3 = heavy injury (more than 50%)

  3. Monarch observations can be eggs, caterpillars, or butterflies.

  4. The abbreviation "UK" means "unknown."

  5. The data reported have been corrected where necessary by DNR biomonitoring staff based on samples submitted by the schools.

    Spring Harbor School in Madison has been surveying milkweed plants since 1993. To access their data pages, click here (Leaves EEK!).

    The Wisconsin DNR, along with the other Lake Michigan states, has developed a series of GIS (Geographic Information Systems) maps to show ozone injury to plants across the region. To see their data, click here (Leaves EEK!).

    Milkweed Monitoring Data

    2009

    School Name City Survey Date Total Number of Leaves Collected Highest level of Ozone Injury Found Average % of Ozone Injured Leaves Per Plant Total Number of Monarchs Observed
    Brookfield Central HS Brookfield Sept. 2009 115 3 50.8% 0

    2009 Totals

    1 school

     

    115

    3

    50.8%

    0



    2008

    School Name City Survey Date Total Number of Leaves Collected Highest level of Ozone Injury Found Average % of Ozone Injured Leaves Per Plant Total Number of Monarchs Observed
    Brookfield Central High School Brookfield Sept.10, 2008 286 2 40.2% 0
    Wabeno Elementary School Wabeno Sept. 25, 2008 249 1 0% 0

    2008 Totals

    2 schools

     

    535

     

    -

    0



    2007

    School Name City Survey Date Total Number of Leaves Collected Highest level of Ozone Injury Found Average % of Ozone Injured Leaves Per Plant Total Number of Monarchs Observed
    Whitnall High School Greenfield Sept.14, 2007 10 2 19.7% 1

    2007 Totals

    1 school

     

    10

    2

    19.7%

    1



    2006

    School Name City Survey Date Total Number of Leaves Collected Highest level of Ozone Injury Found Average % of Ozone Injured Leaves Per Plant Total Number of Monarchs Observed
    South High School Sheboygan Sept.8, 2006 50 1 2.68% 0
    Urban Middle School Sheboygan Sept. 20-21, 2006 516 1 76% 0

    2006 Totals

    2 schools

     

    566

     

    39.34%

    0



    2005

    School Name City Survey Date Total Number of Leaves Collected Highest level of Ozone Injury Found Average % of Ozone Injured Leaves Per Plant Total Number of Monarchs Observed
    South High School Sheboygan Sept. 7-8, 2005 120 3 1.8% 0
    Rosholt Middle School Rosholt October 6, 2005 10 1 4.3% 0
    Urban Middle School Sheboygan Sept. 19, 2005 34 3 20.4% 0

    2005 Totals

    3 schools

     

    164

     

    21.32%

    0



    2004

    School Name City Survey Date Total Number of Leaves Collected Highest level of Ozone Injury Found Average % of Ozone Injured Leaves Per Plant Total Number of Monarchs Observed
    South High School Sheboygan Sep. 9-10, 2004 60 1 3.2% 0
    Rosholt Middle School Rosholt Sep. 21, 2004 10 1 1.0% 0
    SPASH Stevens Point Sep. 20, 2004 71 3 41.7% 0
    Rhinelander High School Rhinelander Sep. 2004 10 3 39.4% 0

    2004 Totals

    4 schools

     

    151

     

    21.32%

    0



    2003

    School Name City Survey Date Total Number of Leaves Collected Highest level of Ozone Injury Found Average % of Ozone Injured Leaves Per Plant Total Number of Monarchs Observed
    South High School Sheboygan Sep. 3, 2003 110 3 21.5% 7
    Rosholt Middle School Rosholt Sep. 30, 2003 5 3 39.5% 0
    Whitnall High School Greenfield Sep. 15, 2003 60 3 51.7% 7
    Rhinelander High School Rhinelander Sep. 3, 2003 20 2 59.1% 0

    2003 Totals

    4 schools

     

    195

    3

    42.9

    14



    2002

    School Name City Survey Date Total Number of Leaves Collected Highest level of Ozone Injury Found Average % of Ozone Injured Leaves Per Plant Total Number of Monarchs Observed
    South High School Sheboygan Sept 6 2001 120 2 12.3% 1
    Amery High School Amery Sept 12 2001 200 3 9.6% 3
    Rosholt Middle School Rosholt Sept 13 2001 10 1 1.8% 0
    Whitnall High School Greenfield Sept 13 2001 100 3 21.3% 3
    Rhinelander High School Rhinelander Sept 21 2001 20 2 42.8% 0

    2002 Totals

    5 schools

     

    450

    Range: 1-3

    Range: 1.8-42.8%

    7



    2001

    School Name City Survey Date Total Number of Leaves Collected Highest level of Ozone Injury Found Average % of Ozone Injured Leaves Per Plant Total Number of Monarchs Observed
    South High School Sheboygan Sept 6 2001 120 2 10.8% 1
    Eisenhower High School New Berlin Sept. 2001 70 3 38.8% 0
    Kettle Moraine High School Wales Sept 18 2001 10 2 12.8% UK
    Morse Middle School Milwaukee Sept 18 2001 96 2 11.2% 3
    Amery High School Amery Sept 13 2001 210 3 9.5% 4
    Rosholt Middle School Rosholt Sept 24 2001 10 3 9.2% 0
    Cooper Elementary Milwaukee Sept 17 2001 90 3 10.5% 2

    2001 Totals

    7 schools

     

    606

    Range: 2-3

    Range: 9.2-38.8%

    10



    2000

    School Name

    City

    Survey Date

    Total # of Leaves Collected

    Highest Level of Ozone Injury Found

    Average Level of Ozone Injury Found

    Average % Ozone Injured Leaves Per Plant

    Total # of Monarchs Observed

    Amery High School

    Amery

    Sept 8 2000

    218

    2

    1

    1.1%

    4

    Central Middle School

    Hartford

    Sept 12 2000

    30

    UK

    UK

    0.97%

    1

    Farmington Elementary

    Kewaskum

    Sept 2000

    12

    UK

    UK

    UK

    0

    Jefferson School

    Milwaukee

    Sept 13 2000

    20

    2

    2

    1.2%

    0

    Lakeland Vocational High School

    Minocqua

    Sept 8

    2000

    210

    3

    1

    15.6%

    1

    Prairie Lane School

    Pleasant Prairie

    Sept 22 2000

    10

    3

    2

    76.24%

    0

    Rosholt Middle School

    Rosholt

    Sept 13 2000

    10

    1

    1

    2.5%

    0

    Urban Middle School

    Sheboygan

    Sept 6 2000

    30

    0

    0

    0

    3

    2000 Totals

    8 schools

     

    540

    3

    Range: 0-2

    Range: 0-76%

    9

    1999

    School Name

    City

    Survey Date

    Total # of Leaves Collected

    Highest Level of Ozone Injury Found

    Average Level of Ozone Injury Found

    Average % Ozone Injured Leaves Per Plant

    Total # of Monarchs Observed

    Amery High School

    Amery

    Sept 10 1999

    150

    3

    1-2

    13.04%

    4

    Clement Avenue School

    Milwaukee

    Sept 6 1999

    80

    3

    1-2

    9.32%

    1

    Riverdale School

    Muscoda

    Sept 1999

    10

    0

    0

    0

    0

    South High School

    Sheboygan

    Sept 1999

    98

    2

    1-2

    13.04%

    7

    1999 Totals

    4 schools

     

    338

    3

    Range: 0-2

    Range: 0-13%

    12



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