return ts.data.Copy()
}

func (ts *Instance) Series() (Data, []time.Time) {
	ts.mutex.Lock()
	defer ts.mutex.Unlock()
	return ts.data.Copy(), ts.times.copy()
}

func (ts *Instance) SeriesAsDurationSinceEpoch(epoch time.Time) (Data, []time.Duration) {
	ts.mutex.Lock()
	defer ts.mutex.Unlock()
	return ts.data.Copy(), ts.times.asDurationSinceEpoch(epoch)
}

type times []time.Time

func (t times) copy() times {