to workspace block is used to send data from Simulink to workspace. In this block parameters, there is an option save format. (Array, structure with time, and time series).
I am simulating in R2019 a. I get a variable out. I have named the block as simout.
For array format, out.simout is the signal value and out.tout is the time signal.
For structure with time format, out.simout.signals.values is the signal value and out.simout.time is the time signal.
For time series format, out.simout.Data(:,1); is the signal value of 1st column and out.simout.time is the time signal. Similarly, We can do for second column out.simout.Data(:,2).