(1) This section applies in relation to sentencing an offender for a standard sentence offence unless—
(a) the offender was under the age of 18 at the time of the commission of the offence; or
(b) the offence is heard and determined summarily; or
(c) section 162 makes this section inapplicable because of when the offence is alleged to have been committed.
(2) In sentencing an offender for a standard sentence offence, a court—
(a) must take the standard sentence into account as one of the factors relevant to sentencing; and
(b) despite section 5(2)(b), must only have regard to sentences previously imposed for the offence as a standard sentence offence in relation to the sentencing for which this section applied.
(3) Subsection (2)—
(a) does not limit the matters that a court is otherwise required or permitted to take into account in determining the appropriate sentence for a standard sentence offence; and
(b) is not intended to affect the approach to sentencing known as instinctive synthesis.
(4) A court that sentences an offender for a standard sentence offence must at the time of doing so state the reasons for—
(a) imposing that sentence; and
(b) any non-parole period fixed in accordance with section 11 as part of that sentence if that period is shorter than the period specified in section 11A(4)(a) , (b) or (c), as the case requires.
(5) As part of its reasons under subsection (4), a court must refer to the standard sentence for the offence and explain how the sentence imposed by it relates to that standard sentence.