Is meteor/h a unit?

[everzeni]

In the following sentence with a zenithal hourly rate quantity:

the meteor shower at Mars is an Earth-equivalent zenith hourly rate 600 h −1

Should we annotate:

(1) zenith hourly rate <measure type="value"><num>600</num></measure> h −1
or
(2) zenith hourly rate <measure type="value"><num>600</num> <measure type="?" 
unit="meteor/h">h −1</measure>
?

If (2), what type would that be? It's an hourly rate but I don't see anything like that in the unitUtilities.java file.

[kermitt2]

I think the unit is just h^-1 because it's an rate, and it's a FREQUENCY (rate and frequency can be used interchangeably afaik).

[lfoppiano]

I agree to threat the form ${machine truc} * h^-1 and annotate only the h^-1 as frequency.

However, I've found this old example, I'm wondering if is still correct to use type=TEMPERATURE for a rate of cooling (although the sentence doesn't seems to be clear... ok it's a patent, so might be normal there 🐤 )

<p>At the time of quenching, the cooling speed is preferably <measure type="interval"><num atLeast="50">50</num> to <num atMost="300">300</num><measure type="TEMPERATURE" unit="celsius per hour">&#xB0;C per hour</measure></measure> at the centre of a rotor shaft. This enables formation of bainite structure overall.</p>