By a comfort regime.

 And you can a self to define an own genetic chronotype. For this you try within a month   a  go in bed and wake up  on a given time as on 11 pm-12.am and on 7-8 am accordingly. And if to the month ending you are feeling  discomfort, habit  not happened and organism will push you to the  former regime with the latest falling a sleeping, thus you are a genetic owl.

Temperature test.

And here experiment in a temperature checking in armpit, as every morning after wake up. And doing this in bed as not waking up, and within an hour you can be doing an own thing, after check temperature again. Results as temperature not changed, thus you are lark, raised on 0.8 degree C  thus a owl.

Raised on 0.4 degrees C is dove.

 Calculation index by Hildelbrand.

For a definition index, here need doing a small tests, measuring a frequently for pulse and  breath. A test  based on a quality relation to a pulse frequently and breath. And  measure stats you need right away after wake up and define by ration. And if this is ratio is less on 3.1,thus you are owl , and not ending waking up, and rare pulse is here. Index is higher on  5.1 , thus a lark, they are waking up with an often pulse, ready to active  business. Index is 4.1 says about relation his to doves.

And for a right result is an importance doing experiment. And doing this on the weekdays.  Waking time is habitual. Wake up in a calm, silence music, as very load alarm clock is provoking an often heart beating, and index will be to distort. And for a right  accuracy, repeat the experiment every day within 3 days.