Data Series 282

U.S. GEOLOGICAL SURVEY
Data Series 282

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Table 2. Statistical summary of calculated suspended-sediment concentration data and usable percentage of a complete year of valid data (96 data points per day x 365 days) collected using optical sensors, Suisun Bay, San Pablo Bay, and Central and South San Francisco Bays, California, water year 2005.

[All values are in milligrams per liter except percent valid data. Lower quartile is 25th percentile; upper quartile is 75th percentile]

Site Depth Mean Median Lower
quartile		 Upper
quartile		 Percent
valid data
Mallard Island Near-surface 27 24 20 30 99
Near-bottom 28 25 21 31 99
Benicia Bridge Near-Surface 37 31 23 46 65
Near-bottom 67 61 44 82 74
Carquinez Bridge Mid-depth 42 30 19 52 87
Near-bottom 66 50 31 84 73
Mare Island Causeway Mid-depth 55 42 27 70 74
Near-bottom 109 82 51 141 59
Channel Marker 1 Mid-depth 38 27 17 47 45
Point San Pablo Mid-depth 32 25 17 40 62
Near-bottom 37 28 20 44 86
Alcatraz Island Mid-depth 18 15 12 21 71
San Mateo Bridge Mid-depth 47 43 35 57 37
Near-bottom 45 38 28 53 16
Dumbarton Bridge Mid-depth 48 43 23 62 45
Near-bottom 43 32 24 51 30
Channel Marker 17 Mid-depth 51 40 31 57 50
Near-bottom 56 36 25 65 41

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