net 
Base Object  Channel_Comment 
Attribute Name  net 
ColumnName  net 
Logical Rolename   
RoleName   
Definition  Unique network identifier. This character string is the name of a seismic network 
Note 
 

sta 
Base Object  Channel_Comment 
Attribute Name  sta 
ColumnName  sta 
Logical Rolename   
RoleName   
Definition  Station code. This is the common code-name of a seismic observatory. Generally only three or four characters are used 
Note 
 

seedchan 
Base Object  Channel_Comment 
Attribute Name  seedchan 
ColumnName  seedchan 
Logical Rolename   
RoleName   
Definition  SEED channel name. The first character denotes the band code, the second for the instrument code and the third represents the component code 
Note 
 

location 
Base Object  Channel_Comment 
Attribute Name  location 
ColumnName  location 
Logical Rolename   
RoleName   
Definition  Describes the individual sites on an array station, operated by the same network operator 
Note 
 

ondate 
Base Object  Channel_Comment 
Attribute Name  ondate 
ColumnName  ondate 
Logical Rolename   
RoleName   
Definition  This attribute denotes the start date 
Note 
 

comment_id 
Base Object  Channel_Comment 
Attribute Name  id 
ColumnName  comment_id 
Logical Rolename   
RoleName  comment_id 
Definition  The comment code key of the associated Comment Description Dictionary 
Note 
 

channel 
Base Object  Channel_Comment 
Attribute Name  channel 
ColumnName  channel 
Logical Rolename   
RoleName   
Definition  Channel name 
Note 
 

channelsrc 
Base Object  Channel_Comment 
Attribute Name  channelsrc 
ColumnName  channelsrc 
Logical Rolename   
RoleName   
Definition  Domain for channel. This specifies what naming convention is used for the channel name (i.e. SEED, USGS, etc.) 
Note 
 

offdate 
Base Object  Channel_Comment 
Attribute Name  offdate 
ColumnName  offdate 
Logical Rolename   
RoleName   
Definition  This attribute denotes the end date 
Note 
 

comment_level 
Base Object  Channel_Comment 
Attribute Name  comment_level 
ColumnName  comment_level 
Logical Rolename   
RoleName   
Definition  The numeric value (if any) associated with the Units of comment level in the same Comment Description Dictionary. Together, this numeric value, its units, and the Description of comment of the associated Comment Description, all describe a comment for the station/channel 
Note 
 

lddate 
Base Object  Channel_Comment 
Attribute Name  lddate 
ColumnName  lddate 
Logical Rolename   
RoleName   
Definition  Load date. Date and time that the record was created or last modified, in Oracle date datatype 
Note