The CSU calculator will calculate your capped weighted CSU GPA using the 10-11th grades. SLO is the only CSU that uses 9th grades so you should recalculate your SLO separately using the calculator posted on the Cal State apply website. There were some wrong CSU GPA calculations on the Cal State apply application last year so you might just want to double check any of the calculations using this link: https://www2.calstate.edu/apply/eligibility-index
Another option is using the Rogerhub calculator which will give you the UC capped weighted GPA which equals the CSU capped weighted GPA.