Tyler Storm Gravity Mains

Stormwater gravity mains. Last update date shows the last time each assest was manipulated in any way. Install update source is how the install date was added into GIS. Last editor should show who the last person to manipulate the assest was. Install date gives an estimation of when each asset was actually installed in the ground, not put into GIS. Update source is the accuracy of each asset in our GIS system, GPS-SURVEY-GRADE is the most accurate form of data we have available本数据集针对雨水重力管（Stormwater gravity mains）相关信息进行收录。其中：最后更新日期用于标识每项设施资产（asset）被任何形式操作的最后时间节点；安装更新源用于说明设施资产的安装日期是如何被录入地理信息系统（GIS）的；最后编辑者字段用于展示每项设施资产的最后操作责任人；安装日期用于估算每项设施资产实际埋地安装的时间，而非其被录入GIS系统的时间；更新源用于标识每项设施资产在GIS系统中的数据精度等级，其中GPS测量级数据（GPS-SURVEY-GRADE）为当前可获取的最高精度数据类型。