AWS TD13 Global Surface Observations, daily 1901-1973

Global synoptic surface observations from the Air Weather Service for 1901-1973, called "Tape Deck 13" because it is the combination of multiple card decks (datasets), conversion to a standard format and transfer to tape. There are usually 1 to 4 records per station each day.

Wind direction, wind speed, and station elevation are "standard" variables usually available in each deck; the rest of the variables are "supplemental fields" which are not in some decks (groups of stations). Sea level pressure "standard" format excludes the high order digits, retaining only tens, units and tenths of millibars; however, some decks provide the hundreds/thousands digit in the "supplemental fields".

自1901年至1973年，由气象服务机构提供的全球综合地面观测数据集，称为“磁带库13”，因其为多个卡片库（数据集）的结合，经过标准化格式转换并传输至磁带而得名。通常每个站点每天有1至4条记录。风向、风速和站址海拔为“标准”变量，通常在每个库中均有提供；其余变量为“补充字段”，并非所有库（站点组）中均包含。海平面气压的“标准”格式排除了高阶数位，仅保留十位、个位及十分之一位毫巴；然而，某些库在“补充字段”中提供了百位/千位数字。