Is the airspace at KUGN class G from the surface to 1200' AGL where class E starts when the tower is closed?
SVC means Service, not Surface, that would be SFC. 1200-0200Z is a time range, that means the zone is class D between 12:00 UTC (that's what the Z or Zulu time means) and 0200Z, which would translate to 07:00-21:00 local daylight savings time in Waukegan. Basically, the tower is open during those times and then it closes so it becomes a class E zone, traffic would presumably use unicom if the airport is still open. 

The zone is not defined in the sheet, you'd have to look at a chart to get the details on size, shape and how high it goes.