Frequencies for first 10,000 rows of prov6430 variable in posclia2010 dataset : total ppm | test | volumes | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,679 96.79 96.79 1 | 1 0.01 96.80 2 | 8 0.08 96.88 3 | 2 0.02 96.90 4 | 2 0.02 96.92 5 | 5 0.05 96.97 6 | 2 0.02 96.99 7 | 4 0.04 97.03 8 | 1 0.01 97.04 10 | 8 0.08 97.12 11 | 2 0.02 97.14 12 | 1 0.01 97.15 14 | 2 0.02 97.17 15 | 1 0.01 97.18 17 | 1 0.01 97.19 20 | 6 0.06 97.25 22 | 1 0.01 97.26 24 | 2 0.02 97.28 25 | 5 0.05 97.33 30 | 2 0.02 97.35 32 | 1 0.01 97.36 35 | 4 0.04 97.40 36 | 3 0.03 97.43 38 | 1 0.01 97.44 41 | 1 0.01 97.45 42 | 1 0.01 97.46 44 | 1 0.01 97.47 45 | 1 0.01 97.48 46 | 1 0.01 97.49 48 | 2 0.02 97.51 50 | 22 0.22 97.73 56 | 1 0.01 97.74 60 | 4 0.04 97.78 64 | 2 0.02 97.80 75 | 1 0.01 97.81 78 | 1 0.01 97.82 86 | 1 0.01 97.83 87 | 1 0.01 97.84 96 | 1 0.01 97.85 100 | 23 0.23 98.08 102 | 2 0.02 98.10 104 | 1 0.01 98.11 107 | 1 0.01 98.12 115 | 1 0.01 98.13 120 | 2 0.02 98.15 150 | 10 0.10 98.25 152 | 1 0.01 98.26 160 | 1 0.01 98.27 200 | 14 0.14 98.41 205 | 1 0.01 98.42 219 | 1 0.01 98.43 232 | 1 0.01 98.44 239 | 1 0.01 98.45 240 | 2 0.02 98.47 250 | 5 0.05 98.52 255 | 1 0.01 98.53 260 | 1 0.01 98.54 265 | 1 0.01 98.55 300 | 14 0.14 98.69 310 | 2 0.02 98.71 315 | 1 0.01 98.72 316 | 1 0.01 98.73 350 | 2 0.02 98.75 400 | 5 0.05 98.80 430 | 1 0.01 98.81 440 | 1 0.01 98.82 456 | 1 0.01 98.83 489 | 1 0.01 98.84 500 | 22 0.22 99.06 550 | 1 0.01 99.07 559 | 1 0.01 99.08 600 | 1 0.01 99.09 620 | 1 0.01 99.10 650 | 1 0.01 99.11 661 | 1 0.01 99.12 688 | 1 0.01 99.13 700 | 5 0.05 99.18 720 | 2 0.02 99.20 739 | 1 0.01 99.21 750 | 1 0.01 99.22 800 | 1 0.01 99.23 806 | 1 0.01 99.24 842 | 1 0.01 99.25 887 | 1 0.01 99.26 889 | 1 0.01 99.27 902 | 1 0.01 99.28 954 | 1 0.01 99.29 957 | 1 0.01 99.30 1000 | 15 0.15 99.45 1019 | 1 0.01 99.46 1030 | 1 0.01 99.47 1100 | 2 0.02 99.49 1134 | 1 0.01 99.50 1135 | 1 0.01 99.51 1200 | 4 0.04 99.55 1382 | 1 0.01 99.56 1440 | 1 0.01 99.57 1487 | 1 0.01 99.58 1500 | 2 0.02 99.60 1560 | 1 0.01 99.61 1571 | 1 0.01 99.62 1664 | 1 0.01 99.63 1700 | 2 0.02 99.65 1704 | 1 0.01 99.66 1900 | 1 0.01 99.67 2000 | 4 0.04 99.71 2203 | 1 0.01 99.72 2260 | 1 0.01 99.73 2600 | 2 0.02 99.75 2673 | 1 0.01 99.76 2783 | 1 0.01 99.77 2880 | 1 0.01 99.78 2890 | 1 0.01 99.79 3000 | 1 0.01 99.80 3128 | 1 0.01 99.81 4000 | 4 0.04 99.85 4200 | 1 0.01 99.86 5000 | 1 0.01 99.87 5400 | 1 0.01 99.88 6062 | 1 0.01 99.89 6100 | 1 0.01 99.90 6661 | 1 0.01 99.91 7000 | 1 0.01 99.92 7200 | 2 0.02 99.94 8000 | 1 0.01 99.95 8428 | 1 0.01 99.96 8671 | 1 0.01 99.97 16000 | 1 0.01 99.98 18713 | 1 0.01 99.99 33286 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016