Blood oxygen transport and depletion in diving emperor penguins

# Blood oxygen transport and depletion in diving emperor penguins Data were collected with backpack recorders on diving emperor penguins, and then downloaded to computers for processing. Research was conducted at a sea ice camp in McMurdo Sound, Antarctica in 2001-2008 (see this article and related citations for details of procedures, data collection, and prior analyses of data). There were two types of recorders: an oxygen recorder and a depth recorder. The recorders stored time (mm dd yyyy hh:mm:ss) and depth (meters), and time (mm dd yyyy hh:mm:ss) and the partial pressure of oxygen (PO2, mm Hg). These data allowed construction of oxygen and depth profiles versus time. A given bird had either an arterial or venous oxygen electrode (one electrode per bird). As explained in the paper, the PO2 was converted to hemoglobin saturation (%) with use of the emperor penguin O2-hemoglobin dissociation curve from Meir and Ponganis, 2009. In this paper, the profiles were sorted into three groups according to the type of hemoglobin saturation profile: arterial, Type A venous, and Type B venous. Criteria for Type A and Type B venous saturation profiles are described in the text. ## Description of the data and file structure There are two files. * Saturation Profile Groups - ID & Dive Parameters.xlsx * Dive depth & Hb saturation data.xlsx There are two .xlsx files in the directory. The first file (**Saturation Profile Groups - ID & Dive Parameters.xlsx**) summarizes oxygen profile and dive characteristics for all dives in the study. The summary for each group (arterial, Type A venous, Type B venous) included Bird ID, Dive ID (the number assigned to a given dive), dive duration (minutes), maximum dive depth (meters), start time and end time (time is in hh:mm:ss). The second file (**Dive depth & Hb saturation data.xlsx**) contains serial collections of time, blood partial pressure of oxygen (PO2 in mm Hg), hemoglobin saturation (%, calculated with the pH 7.5 oxygen-hemoglobin dissociation curve) and depth (meters) for each bird. Blood oxygen and depth data are on a single worksheet for each bird in that file. On each worksheet, the Bird ID and a brief summary of the data are given at the top of the page. Time, PO2 and hemoglobin saturation are listed in the first set of columns; time and depth are presented in the second set of columns. Time is either in date/time (M D YYYY h:mm:ss.000) or in time (in hh:mm:ss.000) depending upon the bird.