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The first part of the table below looks at the demand for Linux skills in IT jobs advertised for the Hertfordshire region. Included is a guide to the average salaries offered in IT jobs that have cited Linux over the 3 months to 19 March 2010 with a comparison to the same period in the previous 2 years. The second part of the table is for comparison and provides aggregates for all of the Operating Systems category for the Hertfordshire region.
| Linux |
| 3 months to
19 Mar 2010 | Same period 2009 | Same period 2008 |
| Rank | 48 | 10 | 23 |
| Rank change year-on-year |
 -38 |  +13 |
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| Matching permanent IT job ads | 63 | 265 | 260 |
| As % of all permanent IT jobs located in Hertfordshire | 3.318 % | 12.54 % | 5.773 % |
| As % of the Operating Systems category | 12.26 % | 37.64 % | 21.79 % |
| Salaries quoted | 56 | 215 | 235 |
| Average salary | £40,000 | £40,000 | £35,000 |
| Average salary % change year-on-year | |
| 90% of jobs offered a salary of more than | £30,000 | £27,500 | £25,000 |
| 10% of jobs offered a salary of more than | £56,250 | £60,000 | £50,000 |
| UK excluding London average salary | £35,000 | £35,000 | £35,000 |
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Permanent IT job ads with a match in the
Operating Systems category | 514 | 704 | 1193 |
| As % of all permanent IT jobs located in Hertfordshire | 27.07 % | 33.32 % | 26.49 % |
| Salaries quoted | 429 | 566 | 1012 |
| Average salary | £37,500 | £37,500 | £35,000 |
| Average salary % change year-on-year | |
| 90% of jobs offered a salary of more than | £22,500 | £25,000 | £22,500 |
| 10% of jobs offered a salary of more than | £55,000 | £48,500 | £57,500 |
| UK excluding London average salary | £33,500 | £32,500 | £32,500 |
| % change year-on-year | |
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Linux
Demand TrendThe chart provides a 3-month moving total beginning in 2004 of permanent IT jobs citing Linux across the Hertfordshire region as a proportion of the total demand within the Operating Systems category.
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