18.443, Feb. 21, 2008. Table from "Engineering toolbox"
      of air pressures (in five different units, last 5 columns)
      at different elevations above (or below, if negative)
      sea level, measured in feet or meters.


              feet meters inHg    mmHg   psia  kgpcmsq kPa	
      [1,]   -5000 -1526 35.5800 903.70 17.480 1.2290 120.50
      [2,]   -4500 -1373 35.0000 889.00 17.190 1.2090 118.50
      [3,]   -4000 -1220 34.4200 874.30 16.900 1.1880 116.50
      [4,]   -3500 -1068 33.8400 859.50 16.620 1.1690 114.60
      [5,]   -3000  -915 33.2700 845.10 16.340 1.1490 112.70
      [6,]   -2500  -763 32.7000 830.60 16.060 1.1290 110.70
      [7,]   -2000  -610 32.1400 816.40 15.780 1.1090 108.80
      [8,]   -1500  -458 31.5800 802.10 15.510 1.0910 106.90
      [9,]   -1000  -305 31.0200 787.90 15.230 1.0710 105.00
      [10,]   -500  -153 30.4700 773.90 14.960 1.0520 103.10
      [11,]      0     0 29.9200 760.00 14.696 1.0333 101.33
      [12,]    500   153 29.3800 746.30 14.430 1.0150  99.49
      [13,]   1000   305 28.8600 733.00 14.160 0.9560  97.63
      [14,]   1500   458 28.3300 719.60 13.910 0.9780  95.91
      [15,]   2000   610 27.8200 706.60 13.660 0.9600  94.19
      [16,]   2500   763 27.3200 693.90 13.410 0.9430  92.46
      [17,]   3000   915 26.8200 681.20 13.170 0.9260  90.81
      [18,]   3500  1068 26.3300 668.80 12.930 0.9090  89.15
      [19,]   4000  1220 25.8400 656.30 12.690 0.8920  87.49
      [20,]   4500  1373 25.3700 644.40 12.460 0.8760  85.91
      [21,]   5000  1526 24.9000 632.50 12.230 0.8600  84.33
      [22,]   6000  1831 23.9900 609.30 11.780 0.8280  81.22
      [23,]   7000  2136 23.1000 586.70 11.340 0.7970  78.19
      [24,]   8000  2441 22.2300 564.60 10.910 0.7670  75.22
      [25,]   9000  2746 21.3900 543.30 10.500 0.7380  72.40
      [26,]  10000  3050 20.5800 522.70 10.100 0.7100  69.64
      [27,]  15000  4577 16.8900 429.00  8.290 0.5830  57.16
      [28,]  20000  6102 13.7600 349.50  6.760 0.4750  46.61
      [29,]  25000  7628 11.1200 282.40  5.460 0.3840  37.65
      [30,]  30000  9153  8.9030 226.10  4.370 0.3070  30.13
      [31,]  35000 10679  7.0600 179.30  3.470 0.2440  23.93
      [32,]  40000 12204  5.5580 141.20  2.730 0.1920  18.82
      [33,]  45000 13730  4.3750 111.10  2.150 0.1510  14.82
      [34,]  50000 15255  3.4440  87.50  1.690 0.1190  11.65
      [35,]  55000 16781  2.7120  68.90  1.330 0.0940   9.17
      [36,]  60000 18306  2.1350  54.20  1.050 0.0740   7.24
      [37,]  70000 21357  1.3250  33.70  0.650 0.0460   4.49
      [38,]  80000 24408  0.8273  21.00  0.410 0.0290   2.80
      [39,]  90000 27459  0.5200  13.20  0.260 0.0180   1.76
      [40,] 100000 30510  0.3290   8.36  0.160 0.0110   1.12