It's methane. While methane is a more potent greenhouse gas than CO2, there is over 200 times more CO2 in the atmosphere. Eg-CO2 levels are 380 ppm (parts per million) while methane levels are 1.75ppm.Hence the amount of warming methane contributes is calculated at 28% of the warming CO2 contributes. Here is a graph of the various forcings that influence climate (methane is CH4, right above CO2).g-CO2 levels are 380 ppm (parts per million) while methane levels are 1.75ppm. Hence the amount of warming methane contributes is calculated at 28% of the warming CO2 contributes. Here is a graph of the various forcings that influence climate (methane is CH4, right above CO2).
A 25 feet distance is required between the two cones to test  parallel parking skills. The cones are assumed to be parked  vehicles in the test.
ï² Distance to backdrop must be between 60âand 72â (must be 12â farther than distance to customer subject) Dedicated Parking Test Area: ï² Must be a paved surface and include at least one of two options: â¢ Parallel Parking size: 8â by 27â (Total Parallel Parking size: 16â by 81â) â¢ Three point parking: 72â by 56â. ï² A minimum of 42 in height tube/cone. A removable rubber base that weighs a minimum of 10lbs. is. recommended for the tube. ï² A minimum of 6 tubes/cones for parallel parking testing area and a minimum of 15 (20 recommended) tubes/cones for three point parking area.