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Tsunami RSL statistics

Tsunami RSL statistics. Zhao Li. Script to calculate moving average, standard deviation for RSL with 2 time windows Detect/warn when there is significant change in RSL value Script can be use to plot other fields. Data table from raw SNMP data. 30 minutes window size. Reference window.

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Tsunami RSL statistics

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  1. Tsunami RSL statistics Zhao Li • Script to calculate moving average, standard deviation for RSL with 2 time windows • Detect/warn when there is significant change in RSL value • Script can be use to plot other fields

  2. Data table from raw SNMP data 30 minutes window size Reference window Sample window

  3. Data table from raw SNMP data 30 minutes window size Reference window Sample window

  4. CASE B: North Peak -> STP 4/21/2001 snow storm RSL graph Moving avg > 2 std dev

  5. Conclusion • Moving avg. changes slower for a large time window • change in std. dev changes could cause changes in event detection • partial overlap of windows do not differ very much from non-overlap

  6. CASE C North Peak -> Mt. Woodson interference Error seconds Moving avg. > 2 std dev

  7. CASE C North Peak -> Mt. Woodson interference Error seconds Moving avg. > 2 std dev

  8. Comparsion of different window sizes No-overlap 1, 0.5 day No-overlap 2, 1 day Overlap 2,1,0.5 day

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