ADG602 D/S capacitances in on-state

Hi

In the datasheet of the ADG602, the capacitances in the off-state are given as 50pF for drain and 50pF for source. But what about the 145pF in the on-state? Does this mean there are two times 145pF, connected with the Rdson of ~2 Ohm (pi-network) or is there just a single 145pF?

Best Regards,

Fabian