Residual static error variations across time for each of the three example sequence. The duration of a full sequence is 20 m. The black circle indicates the closed loop acquisition during which the LS reference slopes were measured. The labels along the x-axis correspond to the loop configuration: TT represents a dithering acquisition, TS means that the loop was driven by the TS, LS means that the loop was driven by the LS, LG means that the loop was driven by the TS with low gains, and OL means that the loop was open.