Hi @antti.järvi ,

This PQL statement computes the TPT regardless of which and the orders of the activities:

AVG(CALC_THROUGHPUT(ALL_OCCURRENCER'Process Start'] TO ALL_OCCURRENCER'Process End'], REMAP_TIMESTAMPS("ACTIVITIES"."EVENTTIME", DAYS)))

Dear @antti.järvi 

Please try DATEDIFF (celonis.com) function, that is possible to calculate negative value too.

I usually use this like

```

DATEDIFF(

        dd,

        PU_FIRST(VBAP,_CEL_MERGED_ACTIVITIES.TIMESTAMP,_CEL_MERGED_ACTIVITIES.ACTIVITY = 'Due Date passed: Invoice'),

        PU_FIRST(VBAP,_CEL_MERGED_ACTIVITIES.TIMESTAMP,_CEL_MERGED_ACTIVITIES.ACTIVITY = 'Clear Invoice'),

)

```

Best regards,

Kazuhiko

Works sweetly for my problem, now I just need to add logarithmic binning (as in throughput time search visualization)