LONDON, Oct 11 (Reuters) -North Sea Ekofisk crude was offered lower on Friday while other grades including WTI Midland were steady.

PLATTS WINDOW

* Indications are on a free-on-board (FOB) basis unless marked as cost, insurance and freight (CIF) or delivered at place (DAP).

* No deals, a trade source said.

* Ekofisk: BP offered Nov. 1-3 at dated Brent plus $1.95, less than an offer on Thursday.

* Other North Sea grades: No indications

* WTI Midland: Last traded on Thursday at dated Brent plus $1.90 CIF Rotterdam, equal to roughly dated Brent plus 97 cents on an FOB basis, according to Reuters calculations.

* WTI Midland is the cheapest of the benchmark grades and sets dated Brent's value.

Reporting by Alex Lawler; Editing by Louise Heavens

- NORTH SEA CRUDE OIL DIFFERENTIALS AND OUTRIGHT PRICES: 0#BFO-DIF 0#C-E Dated BFO BFO- Brent BFO-BRT BFO-E Forties BFO-FOT FOT-E Oseberg BFO-OSE OSE-E Ekofisk BFO-EKO EKO-E Monthly North Sea crude loading programmes O/LOAD OPEC OPEC NSEA North Sea CRU crude oil PROD oil products DRV derivatives PRO/E European products OILOIL NYMOIL, IPEOIL, OILSPD, OILARB CRDWLDPRODEUR, PRODUS, APROD ENERGY energy speed guide CRUDE/1 crude speed guide