Complex sentence: In San Diego, KCST-TV experienced a carryover effect and also rose to first place locally, knocking KGTV down to third behind CBS station KFMB-TV (channel 8).
Split into simpler sentences: In San Diego, KCST-TV experienced a carryover effect. It also rose to first place locally, knocking KGTV down to third behind the CBS station KFMB-TV (channel 8).