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Number of Scans |
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Scan Number (1) |
Number of Packets (1) |
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Parent Scan Number (1) |
Parent RT (1) |
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Parent M/Z (1) |
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Total Ion Current (1) |
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Scan Number (2) |
Number of Packets (2) |
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Parent Scan Number (2) |
Parent RT (2) |
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Parent M/Z (2) |
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Total Ion Current (2) |
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Scan Number (N) |
Number of Packets (N) |
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Parent Scan Number (N) |
Parent RT (N) |
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Parent M/Z (N) |
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Total Ion Current (N) |
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M/Z Value 1 (1) |
Intensity Value 1 (1) |
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M/Z Value 2 (1) |
Intensity Value 2 (1) |
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M/Z Value 3 (1) |
Intensity Value 3 (1) |
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M/Z Value M (1) |
Intensity Value M (1) |
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M/Z Value 1 (2) |
Intensity Value 1 (2) |
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M/Z Value 2 (2) |
Intensity Value 2 (2) |
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M/Z Value M (N) |
Intensity Value M (N) |
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Supplementary Figure 1c: Description
of MS2AR file
MS2AR Header Byte
Description
Bytes Type Description
0...3 float Version
4...7 int Type 0 = PROFILE, 1 = CENTROID
If type is equal to PROFILE then the packets for each scan are 4 bytes long otherwise they are 8 bytes long as shown above
8...11 int Number of scan headers to follow. A scan header is composed of two integer values; the number of the scan and the number of packets for than scan.
Bytes Type Description
0...3 int Scan number
4...7 int Number of packets
8...11 int Number of parent scan
12..15 float Retention time of parent scan
16..19 float M/Z of parent ion
20..23 float Basepeak, i.e. the most abundant peak in the spectrum
24..27 float Total Ion Current (TIC)