This is from Radau’s table. The formula for calculation of difference of altitude of two stations is
in which D is the difference of height in meters, h and h' are barometer readings in millimeters and t and t' are the temperatures in centigrade degrees.
| Mill. | Meters. |
| 500 | 3365.4 |
| 501 | 3349.4 |
| 502 | 3333.5 |
| 503 | 3317.6 |
| 504 | 3301.7 |
| 505 | 3285.9 |
| 506 | 3270.1 |
| 507 | 3254.3 |
| 508 | 3238.5 |
| 509 | 3222.8 |
| 510 | 3207.1 |
| 511 | 3191.5 |
| 512 | 3175.9 |
| 513 | 3160.3 |
| 514 | 3144.7 |
| 515 | 3129.2 |
| 516 | 3113.7 |
| 517 | 3098.2 |
| 518 | 3082.8 |
| 519 | 3067.4 |
| 520 | 3052.0 |
| 521 | 3036.6 |
| 522 | 3021.3 |
| 523 | 3006.0 |
| 524 | 2990.7 |
| 525 | 2975.5 |
| 526 | 2960.3 |
| 527 | 2945.1 |
| 528 | 2930.0 |
| 529 | 2914.9 |
| 530 | 2899.8 |
| 531 | 2884.7 |
| 532 | 2869.7 |
| 533 | 2854.7 |
| 534 | 2839.7 |
| 535 | 2824.7 |
| 536 | 2809.8 |
| 537 | 2794.9 |
| 538 | 2780.0 |
| 539 | 2765.2 |
| 540 | 2750.4 |
| 541 | 2735.6 |
| 542 | 2720.9 |
| 543 | 2706.1 |
| 544 | 2691.4 |
| 545 | 2676.8 |
| 546 | 2662.1 |
| 547 | 2647.5 |
| 548 | 2632.9 |
| 549 | 2618.3 |
| 550 | 2603.8 |
| 551 | 2589.3 |
| 552 | 2574.8 |
| 553 | 2560.3 |
| 554 | 2545.9 |
| 555 | 2531.5 |
| 556 | 2517.1 |
| 557 | 2502.7 |
| 558 | 2488.4 |
| 559 | 2474.1 |
| 560 | 2459.8 |
| 561 | 2445.6 |
| 562 | 2431.4 |
| 563 | 2417.2 |
| 564 | 2403.0 |
| 565 | 2388.8 |
| 566 | 2374.7 |
| 567 | 2360.6 |
| 568 | 2346.5 |
| 569 | 2332.5 |
| 570 | 2318.4 |
| 571 | 2304.4 |
| 572 | 2290.4 |
| 573 | 2276.5 |
| 574 | 2262.6 |
| 575 | 2248.7 |
| 576 | 2234.8 |
| 577 | 2220.9 |
| 578 | 2207.1 |
| 579 | 2193.3 |
| 580 | 2179.5 |
| 581 | 2165.7 |
| 582 | 2152.0 |
| 583 | 2138.3 |
| 584 | 2124.6 |
| 585 | 2110.9 |
| 586 | 2097.3 |
| 587 | 2083.7 |
| 588 | 2070.1 |
| 589 | 2056.5 |
| 590 | 2042.9 |
| 591 | 2029.4 |
| 592 | 2015.9 |
| 593 | 2002.4 |
| 594 | 1989.0 |
| 595 | 1975.5 |
| 596 | 1962.1 |
| 597 | 1948.7 |
| 598 | 1935.4 |
| 599 | 1922.0 |
| 600 | 1908.7 |
| 601 | 1895.4 |
| 602 | 1882.1 |
| 603 | 1868.8 |
| 604 | 1855.6 |
| 605 | 1842.4 |
| 606 | 1829.2 |
| 607 | 1816.0 |
| 608 | 1802.9 |
| 609 | 1789.8 |
| 610 | 1776.7 |
| 611 | 1763.6 |
| 612 | 1750.5 |
| 613 | 1737.5 |
| 614 | 1724.4 |
| 615 | 1711.4 |
| 616 | 1698.5 |
| 617 | 1685.5 |
| 618 | 1672.6 |
| 619 | 1659.7 |
| 620 | 1646.8 |
| 621 | 1633.9 |
| 622 | 1621.0 |
| 623 | 1608.2 |
| 624 | 1595.4 |
| 625 | 1582.6 |
| 626 | 1569.8 |
| 627 | 1557.1 |
| 628 | 1544.4 |
| 629 | 1531.7 |
| 630 | 1519.0 |
| 631 | 1506.3 |
| 632 | 1493.7 |
| 633 | 1481.0 |
| 634 | 1468.4 |
| 635 | 1455.8 |
| 636 | 1443.3 |
| 637 | 1430.7 |
| 638 | 1418.2 |
| 639 | 1405.7 |
| 640 | 1393.2 |
| 641 | 1380.7 |
| 642 | 1368.3 |
| 643 | 1355.8 |
| 644 | 1343.4 |
| 645 | 1331.0 |
| 646 | 1318.7 |
| 647 | 1306.3 |
| 648 | 1294.0 |
| 649 | 1281.7 |
| 650 | 1269.4 |
| 651 | 1257.1 |
| 652 | 1244.8 |
| 653 | 1232.6 |
| 654 | 1220.4 |
| 655 | 1208.2 |
| 656 | 1196.0 |
| 657 | 1183.8 |
| 658 | 1171.7 |
| 659 | 1159.5 |
| 660 | 1147.4 |
| 661 | 1135.3 |
| 662 | 1123.3 |
| 663 | 1111.3 |
| 664 | 1099.2 |
| 665 | 1087.2 |
| 666 | 1075.2 |
| 667 | 1063.2 |
| 668 | 1051.2 |
| 669 | 1039.3 |
| 670 | 1027.3 |
| 671 | 1015.4 |
| 672 | 1003.5 |
| 673 | 991.7 |
| 674 | 979.8 |
| 675 | 968.0 |
| 676 | 956.1 |
| 677 | 944.3 |
| 678 | 932.6 |
| 679 | 920.8 |
| 680 | 909.0 |
| 681 | 897.3 |
| 682 | 885.6 |
| 683 | 873.9 |
| 684 | 862.2 |
| 685 | 850.5 |
| 686 | 838.9 |
| 687 | 827.3 |
| 688 | 815.6 |
| 689 | 804.0 |
| 690 | 792.5 |
| 691 | 780.9 |
| 692 | 769.3 |
| 693 | 757.8 |
| 694 | 746.3 |
| 695 | 734.8 |
| 696 | 723.3 |
| 697 | 711.9 |
| 698 | 700.4 |
| 699 | 689.0 |
| 700 | 677.6 |
| 701 | 666.2 |
| 702 | 654.8 |
| 703 | 643.4 |
| 704 | 632.1 |
| 705 | 620.7 |
| 706 | 609.4 |
| 707 | 598.1 |
| 708 | 586.8 |
| 709 | 575.6 |
| 710 | 564.3 |
| 711 | 553.1 |
| 712 | 541 8 |
| 713 | 530.6 |
| 714 | 519.5 |
| 715 | 508.3 |
| 716 | 497.1 |
| 717 | 486.0 |
| 718 | 474.8 |
| 719 | 463.7 |
| 720 | 452.6 |
| 721 | 441.6 |
| 722 | 430.5 |
| 723 | 419.4 |
| 724 | 408.4 |
| 725 | 397.4 |
| 726 | 386.4 |
| 727 | 375.4 |
| 728 | 364.4 |
| 729 | 353.5 |
| 730 | 342.5 |
| 731 | 331.6 |
| 732 | 320.7 |
| 733 | 309.8 |
| 734 | 298.9 |
| 735 | 288.0 |
| 736 | 277.2 |
| 737 | 266.3 |
| 738 | 255.5 |
| 739 | 244.7 |
| 740 | 233.9 |
| 741 | 223.1 |
| 742 | 212.3 |
| 743 | 201.6 |
| 744 | 190.8 |
| 745 | 180.1 |
| 746 | 169.4 |
| 747 | 158.7 |
| 748 | 148.0 |
| 749 | 137.4 |
| 750 | 126.7 |
| 751 | 116.1 |
| 752 | 105.5 |
| 753 | 94.9 |
| 754 | 84.3 |
| 755 | 73.7 |
| 756 | 63.1 |
| 757 | 52.6 |
| 758 | 42.0 |
| 759 | 31.5 |
| 760 | 21.0 |
| 761 | 10.5 |
| 762 | 0.0 |
| 763 | -10.5 |
| 764 | -20.9 |
| 765 | -31.4 |
| 766 | -41.8 |
| 767 | -52.2 |
| 768 | -62.6 |
| 769 | -73.0 |
| 770 | -83.4 |
| 771 | -93.7 |
| 772 | -104.1 |
| 773 | -114.4 |
| 774 | -124.7 |
| 775 | -135.0 |
| 776 | -145.3 |
| 777 | -155.6 |
| 778 | -165.9 |
| 779 | -176.1 |
| 780 | -186.4 |
In comparing the Aneroid with a Mercurial Barometer, correct the latter by the following table, subtracting the corrections.