Dataset on airflow resistance of wings from owls and non-silently flying birds

The dataset contains measured airflow resistance values from prepared wings of owls and other, non-silently flying birds. It consists of a comma-separated values (CSV) file named "dataset_wingpermeability.csv" that contains 149 rows and six columns. The first row contains the header and the remaining 148 rows contain the raw data. The first column specifies the species (e.g. Barn owl, Tawny owl, Long-eared owl, Common buzzard, Eurasian sparrowhawk or Common pigeon) as a string format. The second column specifies the corresponding binomial name (e.g. Tyto alba, Strix aluco, Asio Otus, Buteo buteo, Accipiter nisus or Columba livia) as a string format. The third column contains the number of the wing, which have simply been numbered consecutively from 1 to 39 as integer data type. The fourth column specifies whether it is a left wing or a right wing, again as a string value. The next column contains the measurement position on the wing, which have been numbered from 1 to 4 as integers. The final column then contains the measured flow resistance R in Pa s/m³ as floating point values. The csv-file uses Unicode (UTF-8) character encoding and the fields are separated by commas.

The corresponding figure is a Portable Document Format (PDF) file named "wingpermeability_boxplot.pdf". It shows the measured air flow resistances contained in the dataset as a box plot. It can be seen that, on average, the airflow resistance of the owl wings is significantly lower than that of the wings of the non-silently flying birds.

A third figure ("measurement_positions.pdf") shows a photograph of one of the Barn Owl wings as an example, indicating the four the measurement positions on the pressure side of the wing.

本数据集包含了从猫头鹰及其他非无声飞行鸟类制备的翅膀所测得的气流阻力值。该数据集由名为“dataset_wingpermeability.csv”的逗号分隔值（CSV）文件构成，包含149行及六列数据。首行包含标题，其余148行则包含原始数据。首列以字符串格式指定物种名称（例如：家燕、黄斑 owl、长耳 owl、普通隼、欧亚游隼或普通鸽）。次列则提供了对应的二名法名称（例如：Tyto alba、Strix aluco、Asio Otus、Buteo buteo、Accipiter nisus或Columba livia），亦以字符串格式呈现。第三列包含翅膀编号，编号顺序连续，从1至39，以整数形式表示。第四列指明为左翼或右翼，同样以字符串值表示。紧随其后的列记录了翼上的测量位置，编号从1至4，以整数形式表示。最后一列则包含所测得的气流阻力R，以帕斯卡秒每立方米（Pa s/m³）的浮点值表示。该CSV文件采用Unicode（UTF-8）字符编码，字段之间以逗号分隔。

相对应的图表为名为“wingpermeability_boxplot.pdf”的便携式文档格式（PDF）文件，展示了数据集中所包含的气流阻力值，并以箱线图形式呈现。从图表中可见，猫头鹰翼的气流阻力平均显著低于非无声飞行鸟类的翼部。

第三幅图表（“measurement_positions.pdf”）展示了一只家燕翼的照片作为示例，标明了翼压力侧的四个测量位置。