Mg:Ca data

Magnesium trace element data (Mg:Ca) from ocean perch otoliths for each discrete monthly time period extracted from laser ablation ICP-MS data. These data are used in the univariate mixed modeling analysis for the response variable of Mg:Ca. IDCode: unique identifier for each fish. Age.years.cap: age of the fish in years at date of capture. Age.month.cap: age of the fish in months at date of capture. Month.code.cap: month code for the date of capture, e.g. 75 = Dec 1996. FishID: = IDCode. MgCa: value of the Mg:Ca ratio for that discrete monthly time period (μmol/mol) extracted from the laser ablation ICP-MS data. Month: a code designating the specific month and year of each monthly resolved increment (i.e. 75 = Dec 1996, 76 = Jan 1997, etc.). Age: age when each monthly increment was formed (total months). fMonth = Month (as factor).