You started the SLAM last night? I thought at the start of the SLAM process you should be checking the FC and CC at most every two hours and if possible every hour until the SLAM level starts to hold.I will be testing the water again in the evening and post the readings here.
EDIT: No less than twice a day, the way I see it if you test and adjust more the first day or two the slam will pass by much quicker because the problem is getting attacked heavely the first couple of days. "Test and adjust chlorine levels as frequently as practical, but not more than once per hour, and not less than twice a day. Chlorine additions should be frequent, especially at the beginning. Algae and other organic debris will consume chlorine very rapidly at first. As things progress, you will lose less chlorine each cycle and can add chlorine less frequently."