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Results for t30−t0. Changes t30−t0 (y-axis) are depicted in relation to the baseline value t0 on the x-axis. For A, B, and D, points below the x-axis indicate improvement; for C, points above the x-axis indicate improvement. The red light technology (RLT) and energizing light technology (ELT) t30 − t0 differences decrease with increasing baseline values.
