OPK readings

So I just watched a video on YouTube about OPKs and apparently any distinct line is a positive as the LH surge is more then the norm surge you would have if you were not ovulating.(which would not give you a line at all)...so these are my tests over the past three days...from the left being the first one I took in the evening the two centers I took yesterday one in the morning the next before bed and the last I took about a half an hour ago now...