Hey guys,
So I'll post a clarifying note on the.. err.. post itself. However, just to make things a little clearer right now:
TOTAL % = TOTAL % ENERGY CONSERVED (relative to the "baseline" energy consumption as measured the week prior to Reading week)
CO2 = Energy conserved in the units of "g of CO2 Equivalents" which relates the amount of energy conserved more closely to the environmental impact. The first "CO2" value corresponds to the amount of g CO2 equivalents of energy conserved during the last MEASURED time period (2 or 3 days).
CO2 TOTAL = Same as above but gives the TOTAL amount of energy conserved (in units of g CO2 Equivalents) since Day 1 of the challenge.
*A negative number means that the residence used MORE energy than that measured during the "baseline" energy measurements.
Let me know if you have any further questions; however, the Sustainability website is also quite helpful in explaining this