Air figure 6.46 shows isobars of sea-level pressure from an carly jasary day in 2009. five points are marked with the letters a to e 992 figure 6.46 laboratory exarclso 9 isobars of sea-level prossure trom an earty january day in 2009 a. mark all centers of high and low sea-level pressure with an "h or "l' (by center, we mean at least one closed isobar). indicate two locations where there is likely a center of high or low pressure just off the b. locate two troughs and two ridges, and mark their axes with the appropriate symbols (dashed line for c. at each lettered location, use the isobars to estimate the wind direction. to represent the wind drawa map. trough axis, serrated line for ridge axis). wind barb using the convention for station models you leaned in chapter 1 (treat the dots as cloud circles). d. based solely on the spacing of the isobars, arrange the points in order of increasing wind speed. explain your reasoning.