POPO: Fast-modulating polarimeter with imaging capability

Open Access

Table 1

Statistical measures of $\hat{q}$ $\[\hat{q}\]$ displayed in Fig. 3.

Method	Average (ppm)	Std. dev. (ppm)	Std. err.(ϵ) (ppm)
Single (iXon)	−1288	2819	23
Single (Zyla)	−941	3103	25
Double	−1114	672	5

Notes. Standard error (ϵ) is derived by (standard deviation) / $\sqrt{N_{data}}$ $\[\sqrt{N_{\text {data}}}\]$ , where N_data signifies the number of data, which equals 15 000 in this case. The values from the three methods do not necessarily coincide with each other due to different biases.

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