Step 1: Calculation of correct and incorrect markings
Calculation (addition of variables and dividing by 2, as each marked result is recorded with "2".)	Description (Task, SEO or PSM, device, results type)	New Variable (from the calculation shown in the left column, a new variable is created for step 2 explained below)
(ad201+ad202+ad213+ad214)/2 Example: (2+0+2+2)/2=3 ➔ 3 text ads were marked for task A on large screen when ads were to be marked (results type „PSM“)	Task A, PSM, large screen, text ads	ad2t01 ➔ Thus, „ ad2t01” indicates the number of text ads that have been marked in “task A, PSM results, large screen” (in our example, 3 text ads)
(ad203+ad204+ad205+ad206+ad207+ad208+ad209+ad210+ad211+ad212)/2	Task A, PSM, large screen, organic results	ad2o01 ➔ Number of organic results that have been marked in “task A, PSM results, large screen”
(ad401+ad402+ad413+ad414)/2	Task A, SEO, large screen, text ads	ad4t01
(ad403+ad404+ad405+ad406+ad407+ad408+ad409+ad410+ad411+ad412)/2	Task A, SEO, large screen, organic results	ad4o01
(bd201+bd202+bd213+bd214)/2	Task B, PSM, large screen, text ads	bd2t01
(bd203+bd204+bd205+bd206+bd207+bd208+bd209+bd210+bd211+bd212)/2	Task B, PSM, large screen, organic results	bd2o01
(bd401+bd402+bd413+bd414)/2	Task B, SEO, large screen, text ads	bd4t01
(bd403+bd404+bd405+bd406+bd407+bd408+bd409+bd410+bd411+bd412)/2	Task B, SEO, large screen, organic results	bd4o01
(am201+am202+am213+am214)/2	Task A, PSM, small screen, text ads	am2t01
(am203+am204+am205+am206+am207+am208+am209+am210+am211+am212)/2	Task A, PSM, small screen, organic results	am2o01
(am401+am402+am413+am414)/2	Task A, SEO, small screen, text ads	am4t01
(am403+am404+am405+am406+am407+am408+am409+am410+am411+am412)/2	Task A, SEO, small screen, organic results	am4o01
(bm201+bm202+bm213+bm214)/2	Task B, PSM, small screen, text ads	bm2t01
(bm203+bm204+bm205+bm206+bm207+bm208+bm209+bm210+bm211+bm212)/2	Task B, PSM, small screen, organic results	bm2o01
(bm401+bm402+bm413+bm414)/2	Task B, SEO, small screen, text ads	bm4t01
(bm403+bm404+bm405+bm406+bm407+bm408+bm409+bm410+bm411+bm412)/2	Task B, SEO, small screen, organic results	bm4o01
(cd201+cd202)/2	Task C, PSM, large screen, text ads	cd2t01
(cd203+cd204+cd205)/2	Task C, PSM, large screen, news results	cd2n01
(cd206+cd207+cd208+cd209+cd210+cd211)/2	Task C, PSM, large screen, organic results	cd2o01
(cd212+cd213+cd214+cd215+cd216+cd217+cd218+cd219)/2	Task C, PSM, large screen, shopping ads	cd2s01
(cd220)/2	Task C, PSM, large screen, knowledge graph	cd2w01
(cd401+cd402)/2	Task C, SEO, large screen, text ads	cd4t01
(cd403+cd404+cd405)/2	Task C, SEO, large screen, news results	cd4n01
(cd406+cd407+cd408+cd409+cd410+cd411)/2	Task C, SEO, large screen, organic results	cd4o01
(cd412+cd413+cd414+cd415+cd416+cd417+cd418+cd419)/2	Task C, SEO, large screen, shopping ads	cd4s01
(cd420)/2	Task C, SEO, large screen, knowledge graph	cd4w01
(dd201+dd202)/2	Task D, PSM, large screen, text ads	dd2t01
(dd203+dd204+dd205)/2	Task D, PSM, large screen, news results	dd2n01
(dd206+dd207+dd208+dd209+dd210+dd211)/2	Task D, PSM, large screen, organic results	dd2o01
(dd212+dd213+dd214+dd215+dd216+dd217+dd218+dd219)/2	Task D, PSM, large screen, shopping ads	dd2s01
(dd220)/2	Task D, PSM, large screen, knowledge graph	dd2w01
(dd401+dd402)/2	Task D, SEO, large screen, text ads	dd4t01
(dd403+dd404+dd405)/2	Task D, SEO, large screen, news results	dd4n01
(dd406+dd407+dd408+dd409+dd410+dd411)/2	Task D, SEO, large screen, organic results	dd4o01
(dd412+dd413+dd414+dd415+dd416+dd417+dd418+dd419)/2	Task D, SEO, large screen, shopping ads	dd4s01
(dd420)/2	Task D, SEO, large screen, knowledge graph	dd4w01
(cm201+cm202)/2	Task C, PSM, small screen, shopping ads	cm2s01
(cm203+cm204)/2	Task C, PSM, small screen, text ads	cm2t01
(cm205+cm206+cm211+cm212+cm213+cm214)/2	Task C, PSM, small screen, organic results	cm2o01
(cm208+cm209)/2	Task C, PSM, small screen, news results	cm2n01
(cm210)/2	Task C, PSM, small screen, knowledge graph	cm2w01
(cm401+cm402)/2	Task C, SEO, small screen, shopping ads	cm4s01
(cm403+cm404)/2	Task C, SEO, small screen, text ads	cm4t01
(cm405+cm406+cm411+cm412+cm413+cm414)/2	Task C, SEO, small screen, organic results	cm4o01
(cm408+cm409)/2	Task C, SEO, small screen, news results	cm4n01
(cm410)/2	Task C SEO, small screen, knowledge graph	cm4w01
(dm201+dm202)/2	Task D PSM, small screen, shopping ads	dm2s01
(dm203+dm204)/2	Task D, PSM, small screen, text ads	dm2t01
(dm205+dm206+dm211+dm212+dm213+dm214)/2	Task D, PSM, small screen, organic results	dm2o01
(dm208+dm209)/2	Task D, PSM, small screen, news results	dm2n01
(dm210)/2	Task D, PSM, small screen, knowledge graph	dm2w01
(dm401+dm402)/2	Task D, SEO, small screen, shopping ads	dm4s01
(dm403+dm404)/2	Task D, SEO, small screen, text ads	dm4t01
(dm405+dm406+dm411+dm412+dm413+dm414)/2	Task D, SEO, small screen, organic results	dm4o01
(dm408+dm409)/2	Task D, SEO, small screen, news results	dm4n01
(dm410)/2	Task D, SEO, small screen, knowledge graph	dm4w01