Table 3.
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Summary statistics of 8-h time weighted average (TWA) personal breathing zone PM5 (µg/m3) estimates for each timepoint.

Sample datenMedian of 8 h-TWA estimate (µg/m3)Range of 8-h TWA estimates (µg/m3)Geometric mean of 8-h TWA estimates (µg/m3)Geometric std. dev. of 8-h TWA estimates (µg/m3)
02/14/202213462.8393.8, 597.1465.21.1
02/15/202213445.6363.6, 600.1443.11.2
02/16/202216398.5295.7, 478.2389.01.2
02/17/202212532.2439.2, 732.8530.41.2
02/18/202210729.2560.3, 838.6713.41.2
02/21/202210727.6693.6, 811.3740.71.1
03/21/202214258.260.6, 756.0245.42.1
03/22/202214248.5172.5, 548.7259.61.4
03/23/202213254.0172.0, 707.6280.41.4
03/24/20229503.0201.4, 793.4473.71.5
03/25/20229386.3268.0, 569.0390.21.2
03/28/202210778.7511.3, 1198752.41.3
12/6/202213479.4392.3, 571.1477.21.1
12/7/202213326.9277.7, 503.0347.41.2
12/8/2022a6553.1472.6, 649.0554.61.1
12/9/20229241.4200.3, 342.5245.41.2
12/12/20228344.8285.0, 417.7335.41.1
12/13/202210463.8400.4, 532.0454.11.1
2/14/202311708.0521.7, 931.1718.31.2
2/15/20236705.3462.6, 973.0688.11.3
2/16/20234488.4417.8, 559.0485.21.1
2/17/20238454.0395.7, 1055501.91.4
2/20/202310880.7829.4, 1286937.01.2
2/21/20233454.3418.2, 490.3453.31.1
4/10/202310321.9202.1, 507.3330.61.3
4/12/20238472.7410.3, 606.1485.21.2
4/13/20239384.9324.9, 490.9385.91.1
4/14/20234308.2278.6, 337.9307.01.1
4/17/202312530.6342.4, 719.5513.61.2
Sample datenMedian of 8 h-TWA estimate (µg/m3)Range of 8-h TWA estimates (µg/m3)Geometric mean of 8-h TWA estimates (µg/m3)Geometric std. dev. of 8-h TWA estimates (µg/m3)
02/14/202213462.8393.8, 597.1465.21.1
02/15/202213445.6363.6, 600.1443.11.2
02/16/202216398.5295.7, 478.2389.01.2
02/17/202212532.2439.2, 732.8530.41.2
02/18/202210729.2560.3, 838.6713.41.2
02/21/202210727.6693.6, 811.3740.71.1
03/21/202214258.260.6, 756.0245.42.1
03/22/202214248.5172.5, 548.7259.61.4
03/23/202213254.0172.0, 707.6280.41.4
03/24/20229503.0201.4, 793.4473.71.5
03/25/20229386.3268.0, 569.0390.21.2
03/28/202210778.7511.3, 1198752.41.3
12/6/202213479.4392.3, 571.1477.21.1
12/7/202213326.9277.7, 503.0347.41.2
12/8/2022a6553.1472.6, 649.0554.61.1
12/9/20229241.4200.3, 342.5245.41.2
12/12/20228344.8285.0, 417.7335.41.1
12/13/202210463.8400.4, 532.0454.11.1
2/14/202311708.0521.7, 931.1718.31.2
2/15/20236705.3462.6, 973.0688.11.3
2/16/20234488.4417.8, 559.0485.21.1
2/17/20238454.0395.7, 1055501.91.4
2/20/202310880.7829.4, 1286937.01.2
2/21/20233454.3418.2, 490.3453.31.1
4/10/202310321.9202.1, 507.3330.61.3
4/12/20238472.7410.3, 606.1485.21.2
4/13/20239384.9324.9, 490.9385.91.1
4/14/20234308.2278.6, 337.9307.01.1
4/17/202312530.6342.4, 719.5513.61.2

aThe 8 December 2023 shift had only afternoon samples due to a late start in the field, so the full-shift TWA was estimated by taking the median of the PM samples for that day to each individual’s PM measurement to get the 8-h TWA estimate for that day.

Table 3.
Open in new tab

Summary statistics of 8-h time weighted average (TWA) personal breathing zone PM5 (µg/m3) estimates for each timepoint.

Sample datenMedian of 8 h-TWA estimate (µg/m3)Range of 8-h TWA estimates (µg/m3)Geometric mean of 8-h TWA estimates (µg/m3)Geometric std. dev. of 8-h TWA estimates (µg/m3)
02/14/202213462.8393.8, 597.1465.21.1
02/15/202213445.6363.6, 600.1443.11.2
02/16/202216398.5295.7, 478.2389.01.2
02/17/202212532.2439.2, 732.8530.41.2
02/18/202210729.2560.3, 838.6713.41.2
02/21/202210727.6693.6, 811.3740.71.1
03/21/202214258.260.6, 756.0245.42.1
03/22/202214248.5172.5, 548.7259.61.4
03/23/202213254.0172.0, 707.6280.41.4
03/24/20229503.0201.4, 793.4473.71.5
03/25/20229386.3268.0, 569.0390.21.2
03/28/202210778.7511.3, 1198752.41.3
12/6/202213479.4392.3, 571.1477.21.1
12/7/202213326.9277.7, 503.0347.41.2
12/8/2022a6553.1472.6, 649.0554.61.1
12/9/20229241.4200.3, 342.5245.41.2
12/12/20228344.8285.0, 417.7335.41.1
12/13/202210463.8400.4, 532.0454.11.1
2/14/202311708.0521.7, 931.1718.31.2
2/15/20236705.3462.6, 973.0688.11.3
2/16/20234488.4417.8, 559.0485.21.1
2/17/20238454.0395.7, 1055501.91.4
2/20/202310880.7829.4, 1286937.01.2
2/21/20233454.3418.2, 490.3453.31.1
4/10/202310321.9202.1, 507.3330.61.3
4/12/20238472.7410.3, 606.1485.21.2
4/13/20239384.9324.9, 490.9385.91.1
4/14/20234308.2278.6, 337.9307.01.1
4/17/202312530.6342.4, 719.5513.61.2
Sample datenMedian of 8 h-TWA estimate (µg/m3)Range of 8-h TWA estimates (µg/m3)Geometric mean of 8-h TWA estimates (µg/m3)Geometric std. dev. of 8-h TWA estimates (µg/m3)
02/14/202213462.8393.8, 597.1465.21.1
02/15/202213445.6363.6, 600.1443.11.2
02/16/202216398.5295.7, 478.2389.01.2
02/17/202212532.2439.2, 732.8530.41.2
02/18/202210729.2560.3, 838.6713.41.2
02/21/202210727.6693.6, 811.3740.71.1
03/21/202214258.260.6, 756.0245.42.1
03/22/202214248.5172.5, 548.7259.61.4
03/23/202213254.0172.0, 707.6280.41.4
03/24/20229503.0201.4, 793.4473.71.5
03/25/20229386.3268.0, 569.0390.21.2
03/28/202210778.7511.3, 1198752.41.3
12/6/202213479.4392.3, 571.1477.21.1
12/7/202213326.9277.7, 503.0347.41.2
12/8/2022a6553.1472.6, 649.0554.61.1
12/9/20229241.4200.3, 342.5245.41.2
12/12/20228344.8285.0, 417.7335.41.1
12/13/202210463.8400.4, 532.0454.11.1
2/14/202311708.0521.7, 931.1718.31.2
2/15/20236705.3462.6, 973.0688.11.3
2/16/20234488.4417.8, 559.0485.21.1
2/17/20238454.0395.7, 1055501.91.4
2/20/202310880.7829.4, 1286937.01.2
2/21/20233454.3418.2, 490.3453.31.1
4/10/202310321.9202.1, 507.3330.61.3
4/12/20238472.7410.3, 606.1485.21.2
4/13/20239384.9324.9, 490.9385.91.1
4/14/20234308.2278.6, 337.9307.01.1
4/17/202312530.6342.4, 719.5513.61.2

aThe 8 December 2023 shift had only afternoon samples due to a late start in the field, so the full-shift TWA was estimated by taking the median of the PM samples for that day to each individual’s PM measurement to get the 8-h TWA estimate for that day.

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