+------------+--------------+------+-----+---------+----------------+
| Field      | Type         | Null | Key | Default | Extra          |
+------------+--------------+------+-----+---------+----------------+
| id         | int(11)      | NO   | PRI | NULL    | auto_increment | 
| type       | varchar(255) | NO   |     |         |                | 
| check      | tinyint(1)   | YES  |     | 0       |                | 
| technique  | varchar(255) | NO   | MUL |         |                | 
| descriptor | varchar(255) | YES  |     | NULL    |                | 
| val        | float        | YES  |     | NULL    |                | 
| sd         | float        | YES  |     | NULL    |                | 
| atom       | blob         | YES  |     | NULL    |                | 
| created_at | datetime     | YES  |     | NULL    |                | 
+------------+--------------+------+-----+---------+----------------+