I found a bug about data quality

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this variable is undefined

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b.getDataZoom
var e = a.upgradeDataQuality ? c[Math.max(c.indexOf(e) - 1, 0)] : a.dataQuality;

c.indexOf(e) ==> e is undefined,so we always get radar quality level

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it must be
var e = a.upgradeDataQuality ? c[Math.max(c.indexOf(a.dataQuality) - 1, 0)] : a.dataQuality;

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no response.