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The property of EXAFEL-LCLS-986x32x185x388.f32 :
This is little-endian system.
The first 10 values are: 
1.970544 -1.248694 3.907800 -0.083167 -2.546301 0.854211 3.981653 -4.224158 2.505212 0.612512 ....
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numOfElem = 2264802560
totalDataSize = 9059210240 bytes (8639.536133 MB)
min = -16019.074219
max = 14766.948242
valueRange = 30786.022461
avgValue = 317.724661
entropy = 7.468230
zeromean_variance = 1406482.175745