Plot these values on a polar plot chart:

$1500$ BC $22$h $33$m $71$

$500$ BC $23$h $00$m $76$

$500$ AD $23$h $30$m $81$

$1500$ AD $00$h $15$m $87$

$2000$ AD $02$h $33$m $89$

$2500$ AD $11$h $23$m $88$

$3500$ AD $12$h $22$m $82$

$4500$ AD $12$h $54$m $77$

$5500$ AD $13$h $23$m $71$

$6500$ AD $13$h $52$m $66$

$7500$ AD $14$h $21$m $61$