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view crystallization statistics
Fields in the crystallization statistics table
| Key | Database field | Header | Description |
|---|---|---|---|
| NUMID | NUMID | NUMID | The numerical id. |
| Dat | DAT | Last update | The date on which the entry was last changed. |
| Par | PAR | Par | The owner of the statistics data set (admin). |
| Owner | OWNER | Owner | The owner of the statistics entry (admin). |
| IdentA | IDENTA | Component A | Component A denotes the first component of the crystallization solution including concentration sampling ranges. The default concentration sampling ranges are 0.5 M, 5 % and 5 mg/ml. |
| IdentB | IDENTB | Component B | Component B denotes the second component of the crystallization solution including concentration sampling ranges. The default concentration sampling ranges are 0.5 M, 5 % and 5 mg/ml. |
| NAB | NAB | N(A, B) | N(A, B) is the number of unique experiments in which both component A and B were used. |
| NCryst | NCRYST | N(cryst) | N(cryst) is the number of unique experiments which resulted in crystals. |
| NABCryst | NABCRYST | N(A, B, cryst) | N(A, B, cryst) is the number of unique experiments in which both component A and B were used and which resulted in crystals. |
| PAB | PAB | P(A, B) | P(A, B) is the number of experiments in which both component A and B were used divided by the total number of experiments: P(A,B) = N(A,B) / N. |
| PCryst | PCRYST | P(cryst) | P(cryst) is the number of experiments which resulted in crystals divided by the total number of experiments: P(cryst) = N(cryst) / N. |
| PCrystIFAB | PCRYSTIFAB | P(cryst|AB) | P(cryst|A, B) is the number of experiments which resulted in crystals and in which both components A and B were used divided by the number of experiments in which both components A and B were used: P(cryst|A,B) = N(A,B,cryst) / N(A,B). |
| ICryst | ICRYST | I(cryst) | The I(cryst) score is defined as: I(cryst) = (P(cryst|A,B) - P(cryst)) * P(A,B) The I(cryst) score is positive if components A and B are positively correlated, negative, if they are negatively correlated and 0, if they are not correlated. The I score is symmetrical with respect to component A and B. In XtalBase the I score is multiplied with a factor (currently 1000). The I(cryst) score does not say anything about the significance of the correlation. The higher the number of experiments the more significant the I score. |
| Share | SHARE | Shares | The Share field is used to give other users viewing or modifying rights for a certain object. Permissions can be given to specific users, to the group to which the object owner belongs to and to all users. |
Actions in the crystallization statistics table
| Icon | Description |
|---|---|
 | view crystallization statistics |
 | update the stats entry |