6x4 hill repeats

Cold day (mid 30's) but sunny; used the same hill, Heekin From Eastern to the playground at Ault Park: 365, 368, 361, 363, 361, 363. Just under 2000' of climbing in 55 minutes and normalized power at 297. Given the 6 x 2.5-3 minutes downhill at 0 watts, not too bad on the NP.