============================ scintdef.txt ===================================
This file defines the columns of data in the scint.log files produced by the
GRID software receiver. Each scint.log file contains time-stamped
scintillation measurements. See channeldef.txt for a definition of ORT. ORT
time stamps indicate approximately the time at which the measurement interval
ends. Phase-derived measurements are formed by comparison with a reference
channel. All channels are referenced to reference channel 1 except for
reference channel 1, which is referenced to reference channel 2.
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Column              Quantity

1 ----------- ORT week number. 

2 ----------- ORT whole seconds of week.

3 ----------- ORT fractional second. 

4 ----------- Measurement interval length in seconds.

5 ----------- S4 for the whole interval.

6 ----------- S4 for the first half of the interval.

7 ----------- S4 for the second half of the interval.

8 ----------- sigma phi for the whole interval in cycles.

9 ----------- sigma phi for the first half of the interval in cycles.

10 ---------- sigma phi for the second half of the interval in cycles.

11 ---------- tau0 for the whole interval in seconds.  A tau0 value of -1
              indicates that scintillation was too weak or too slow to enable
              calculation of tau0 or that computation of tau0 is disabled.

12 ---------- SPR (scintillation power ratio) for the whole interval in dB.

13 ---------- Reference indicator:
              0       Normal channel
              1       Reference channel 1
              2       Reference channel 2

14 ---------- Signal type (see channeldef.txt for list of possible types).

15 ---------- Transmitter identification number (TXID).

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