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read: [81.75, 0.044139, 0.036754]
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read: [81.9167, 0.043604, 0.036396]
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read: [83.3333, 0.043066, 0.034892]
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read: [84.9167, 0.042129, 0.034631]
write: [0, nan, 0.000000]

read: [81.0833, 0.044532, 0.035461]
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read: [82.25, 0.043825, 0.034886]
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read: [78.4167, 0.046121, 0.035815]
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read: [80.8333, 0.044585, 0.036955]
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read: [82.4167, 0.043372, 0.037075]
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