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Passer rating (also known as quarterback rating, QB rating, or passing efficiency in college football) is a measure of the performance of passers, primarily quarterbacks, in gridiron football. There are two formulas currently in use: one used by both the National Football League (NFL) and Canadian Football League (CFL), and the other used in NCAA football. Passer rating is calculated using a player's passing attempts, completions, yards, touchdowns, and interceptions. Passer rating in the NFL is on a scale from 0 to 158.3. Passing efficiency in college football is on a scale from −731.6 to 1261.6.
Since 1973, passer rating has been the official formula used by the NFL to determine its passing leader.

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  1. M

    Temperature rating of PVC waste pipe?

    Anyone know the temperature rating of PVC waste pipe? Im putting in a waste pipe for a commercial pasta cooker, it probably holds around 10 - 15 litres of boiling water to cook the stuff with. Im wondering whether a few meters of 42mm copper would be best installed before joining onto the...
  2. W

    Kw rating. Qn & Pn?

    Hi there. In relation to Kw ratings of appliances, does anyone know what Qn and Pn stand for? I often see these abriviations on the data badge. Thanks in advance.
  3. jaydebruyne

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  4. W

    Range rating for a Grant Vortex Pro External Condensing Combi Oil Boiler 26kW

    My new Grant Vortex Pro External Condensing Combi Oil Boiler belches vast amonts of steam condensate fromthe exhaust flue. It clearly needs its maximum allowed rating adjusting downwards. Is it possible to do this please? If so, where is the adjustment?
    • wkb21
    • Thread
    • boiler combi condensate condensing external grant oil oil boiler pro range rating system vortex
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  5. A

    Gate rating

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  6. G

    Gas rating

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  7. townfanjon

    gas rating, again !!

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  8. Hobo128

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  9. Scott_D

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  10. Hobo128

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  11. C

    Ideal Cavalcade 340 Gas boiler Energy Efficiency Rating?

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  12. S

    Fire Rating inspection hatches.

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  13. R

    Gas rating lpg

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  14. D

    Single fathers call for OFSTED MILF rating

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  15. L

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  16. A

    Gas rating

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  17. G

    Gas rating and pipe sizes

    Been gas safe registered for a while now but mostly installing new boilers etc so I calculate the pipe size etc taking into account hob fires and the like pre existing in the property then take gas pressures etc after installs with all appliances on to make sure there correct. I have now started...
  18. D

    Gas rating ?

    Hi sorry to but in but does anyone know the allowable tollerences when gas rating an appliance from what it should be to what it is doing surely you can't be expected to hit the mark all the time there must be a 5% or so diffrence I can't find it in my bpec gas book .
  19. M

    Electric combi's - any good? And how to size them?

    Morning all, As per the title, really - are electric combi's any good? And are the heat/DHW outputs directly equivalent to gas boilers? ie if I size a property as needing a 24KW gas boiler, for example, would a 24KW electric provide the same heat & water flow rate? Cheers!
  20. B

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