Use the table provided to determine the average rate of temperature change from day 1 to day 4 .

$\displaystyle {d}\ {D}{a}{y}{s}$	1	2	3	4	5	6	7
$\displaystyle {T}{\left({d}\right)}\ {\left({T}{e}{m}{p}{e}{r}{a}{t}{u}{r}{e}\ ^{{o}}{F}\right)}$	63	69	77	73	70	73	71