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Pearson correlation coefficient r = -0.809

NA. Lake Pepin ice thickness data collected from 1994 through 2009 during winter stratified random sampling episodes. Measurements were collected within a three week window starting on Monday’s of the last full work week of January.

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Pearson correlation coefficient r = -0.809

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  1. NA Lake Pepin ice thickness data collected from 1994 through 2009 during winter stratified random sampling episodes. Measurements were collected within a three week window starting on Monday’s of the last full work week of January. Sample size is 30 measurements per episode. Note there are zero values during some years where ice coverage did not exist in the upper part of Lake Pepin. No sampling occurred in 2003. Box plots indicate the 25th and 75th percentile, a line within the box marks the median, and the whiskers are the 10th and 90th percentiles. Points indicate outliers.

  2. Pearson correlation coefficient r = -0.809 Relationship between mean December through January air temperature and median ice depth measured during winter SRS episodes from 1995 though 2009. Air temperature data is a mean of temperatures measured daily at Lock&Dam 3 at 08:00, 16:00, and 24:00 hours. No ice data was collected in 2003.

  3. Pearson correlation coefficient r = -0.027 Relationship between mean January discharge at Lock&Dam 3 and median ice depth measured during winter SRS episodes from 1995 though 2008. No ice data was collected in 2003.

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