$4\mathrm{.}9$ Estimate the static formation temperature from the following data $($from Ref. $30)$: depth $=7,646ft,$ drilling stopped $=22$:$00$

on the second day of the month, circulation stopped $=02$:$30$ on the third day of the month.

$\backslash$table$[[$Tool$,\backslash$table$[[$Thermometer$],[$Depth$],[($ft$)]],\backslash$table$[[$Time Off$],[$Bottom$],[($time$/$day$)]],\backslash$table$[[t$