----

----

| ·   | For      the twelve months ended December 31, 2007 gas distribution operating      income increased to $128.7 million from $123.9 million in      2006.  The year-to-date period  reflected: |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | - | The      positive effect of higher mercury-related benefits compared to last year      ($4.4 million). |
|--------|---|--------------------------------------------------------------------------------------------------------|

|   | - | The      positive impact of increased natural gas deliveries due to colder weather      compared to last year (approximately $17  million). |
|--------|---|---------------------------------------------------------------------------------------------------------------------------------------------|

|   | - | Partially      offsetting these positive factors were lower average distribution rates      (approximately $6 million, including the negative impact of about $2      million attributable to the Illinois Commerce Commission’s (ICC) rate      order rehearing decision that went into effect in April 2006); higher      depreciation expense ($5.5 million); the impact of customer interest      (approximately $2 million); higher operating and maintenance costs ($1.3      million) due to increased bad debt expense, partially offset by decreased      storage-related natural gas costs and natural gas and fuel costs to      operate company equipment and facilities; and lower gains on property      sales ($1.3 million). |
|--------|---|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| ·   | For      the 2007 fourth quarter, gas distribution operating income decreased to      $40.4 million from $43.7 million in 2006.  The quarter      reflected: |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | -   | The      negative impact of decreased natural gas deliveries unrelated to weather      compared to last year (approximately $7 million); and higher depreciation      expense ($1.4 million). |
|--------|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | -   | Partially      offsetting these negative factors was the positive impact of increased      natural gas deliveries due to colder weather compared to last year      (approximately $5 million). |
|--------|---------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | For      the twelve-months-ended December 31, 2007, shipping operating income      decreased to $45.4 million from $47.5 million in 2006 due to higher      operating costs; offset in part by increased revenues (resulting from      higher volumes shipped). Increased operating costs for the 2007      twelve-month-ended period, compared to 2006, were due primarily to higher      transportation-related costs including fuel. For the 2007 fourth      quarter, shipping operating income increased to $18.5 million from $18.0      million in 2006 due primarily to lower operating      costs.  Operating revenues for the 2007 fourth quarter, compared      to 2006, were essentially unchanged as the impact of higher average rates,      were largely offset by lower volumes.  Decreased operating costs      for the 2007 fourth quarter, compared to 2006, were due primarily to lower      repair and maintenance costs, cargo claims and general administrative      expenses; partially offset by higher transportation-related costs,      including fuel. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | For      the twelve-months-ended December 31, 2007, other energy-related ventures      operating income increased to $34.0 million compared to $26.6 million in      2006 due to higher operating results in the company’s retail      energy-related products and services businesses and wholesale natural gas      marketing business.  For the 2007 fourth quarter, other energy      ventures operating income decreased to $18.2 million from $25.9 million in      2006 due primarily to lower operating results in the company’s wholesale      natural gas marketing business, partially offset by improved operating      results in the company’s retail energy-related products and services      businesses. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

----

| ·   | Corporate      operating results for the 2007 twelve-month ended period, compared to      2006, reflect the absence of the previously discussed $10 million charge      relating to the SEC inquiry (non-deductible for tax purposes); the absence      of an insurance recovery of $5.2 million pretax recognized in the 2006      third quarter related to previously incurred legal expenses; and a less      favorable weather-related impact associated with certain of the company’s      retail utility-bill management products of $0.2 million pretax, compared      to the favorable weather impact on such businesses in 2006 of $9.5 million      pretax.  Corporate 2007 fourth quarter results, compared to      2006, reflect the absence of any weather-related impact associated with      certain of the company’s retail utility-bill management products, compared      to the favorable weather impact on such businesses in 2006 of $3.2 million      pretax.  Under terms of a corporate swap agreement, benefits or      costs resulting from variances in normal weather associated with retail      energy-related products are recorded primarily in corporate operating      results. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Twelve-month      2007 financial results, compared to 2006, reflect lower pretax equity      investment income due primarily to the absence of a gain of $2.4 million      pretax on a sale of an equity investment interest in the 2006 third      quarter and the related equity investment income prior to the date of sale      of $1.4 million pretax. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Twelve-month      and fourth quarter 2007 financial results were also favorably impacted by      lower interest expense resulting primarily from a reduction of interest      expense of approximately $9.6 million pretax related to a settlement with      the Internal Revenue Service (IRS) related to the timing of certain      deductions taken as part of a change in accounting method on the company’s      2002 tax return. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| ·   | Effective      January 2006, the company reorganized certain of its shipping and related      operations.  This reorganization allows the company to take      advantage of certain provisions of the American Jobs Creation Act of 2004      that provide the opportunity for tax savings subsequent to the date of the      reorganization.  In connection with these activities, the full      year 2006 reflected a net income tax benefit of $5.2 million from the      elimination of certain deferred taxes.  In 2006, the company      incurred $4.7 million in income tax expense associated with these      activities. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

----

----

| Nicor      Inc.                                                                            |   |                    |   |   |                     |   |   |   |   |   |    |   |
|--------------------------------------------------------------------------------------------|--------|-------------------------|--------|--------|--------------------------|--------|--------|--------|--------|--------|---------|--------|
|                                                                                       |   |                    |   |   |                     |   |   |   |   |   |    |   |
| PRELIMINARY      CONSOLIDATED STATEMENTS OF OPERATIONS                                     |   |                    |   |   |                     |   |   |   |   |   |
| Unaudited      (millions, except per share data)                                           |   |                    |   |   |                     |   |   |   |   |   |    |   |
|                                                                                       |   |                    |   |   |                     |   |   |   |   |   |    |   |
|                                                                                       |   | Three      months ended |   |   | Twelve      months ended |   |
|                                                                                       |   | December      31        |   |   | December      31         |   |
|                                                                                       |   | 2007                    |   |   | 2006                     |   |   | 2007   |   |   | 2006    |   |
|                                                                                       |   |                    |   |   |                     |   |   |   |   |   |    |   |
| Operating      revenues                                                                    |   | $                       | 919.5  |   |                     | $      | 838.2  |   |   | $      | 3,176.3 |   |   | $ | 2,960.0 |   |
|                                                                                       |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Operating      expenses                                                                    |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
|      Gas      distribution                                        |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
|          Cost      of gas                     |   |                    | 558.1  |   |                     |   | 484.9  |   |   |   | 1,906.5 |   |   |   | 1,743.7 |   |
|          Operating      and maintenance       |   |                    | 68.3   |   |                     |   | 68.6   |   |   |   | 269.8   |   |   |   | 268.5 |   |
|          Depreciation                         |   |                    | 41.2   |   |                     |   | 39.8   |   |   |   | 165.6   |   |   |   | 160.1 |   |
|          Taxes,      other than income taxes  |   |                    | 40.8   |   |                     |   | 39.8   |   |   |   | 166.9   |   |   |   | 163.0 |   |
|          Mercury-related      recoveries, net |   |                    | -      |   |                     |   | -      |   |   |   | (8.0    | )      |   |   | (3.6 | ) |
|          Property      sale gains             |   |                    | -      |   |                     |   | (.1    | )      |   |   | (2.0    | )      |   |   | (3.3 | ) |
|      Shipping                                                     |   |                    | 91.8   |   |                     |   | 92.2   |   |   |   | 358.5   |   |   |   | 350.8 |   |
|      Other      energy ventures                                   |   |                    | 67.3   |   |                     |   | 54.9   |   |   |   | 210.5   |   |   |   | 189.3 |   |
|      Litigation      charges                                      |   |                    | -      |   |                     |   | -      |   |   |   | -       |   |   |   | 10.0 |   |
|      Other      corporate expenses and eliminations               |   |                    | (25.2  | )      |                     |   | (32.9  | )      |   |   | (98.0   | )      |   |   | (121.0 | ) |
|      Total      operating expenses                                |   |                    | 842.3  |   |                     |   | 747.2  |   |   |   | 2,969.8 |   |   |   | 2,757.5 |   |
|                                                                                       |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Operating      income                                                                      |   |                    | 77.2   |   |                     |   | 91.0   |   |   |   | 206.5   |   |   |   | 202.5 |   |
| Interest      expense, net of amounts capitalized                                          |   |                    | 3.6    |   |                     |   | 13.6   |   |   |   | 37.9    |   |   |   | 49.1 |   |
| Equity      investment income, net                                                         |   |                    | 1.9    |   |                     |   | 1.9    |   |   |   | 6.3     |   |   |   | 11.1 |   |
| Interest      income                                                                       |   |                    | 1.7    |   |                     |   | 1.1    |   |   |   | 8.8     |   |   |   | 9.0 |   |
| Other      income, net                                                                     |   |                    | .4     |   |                     |   | .2     |   |   |   | .6      |   |   |   | .6 |   |
|                                                                                       |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Income      before income taxes                                                            |   |                    | 77.6   |   |                     |   | 80.6   |   |   |   | 184.3   |   |   |   | 174.1 |   |
|                                                                                       |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Income      tax expense, net of benefits                                                   |   |                    | 22.1   |   |                     |   | 22.3   |   |   |   | 49.1    |   |   |   | 45.8 |   |
|                                                                                       |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Net      income                                                                            |   | $                       | 55.5   |   |                     | $      | 58.3   |   |   | $      | 135.2   |   |   | $ | 128.3 |   |
|                                                                                       |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Average      shares of common stock outstanding                                            |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
|       Basic                                                  |   |                    | 45.2   |   |                     |   | 44.9   |   |   |   | 45.2    |   |   |   | 44.6 |   |
|       Diluted                                                |   |                    | 45.3   |   |                     |   | 45.0   |   |   |   | 45.3    |   |   |   | 44.7 |   |
|                                                                                       |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Earnings      per average share of common stock                                            |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
|       Basic                                                  |   | $                       | 1.23   |   |                     | $      | 1.30   |   |   | $      | 2.99    |   |   | $ | 2.88 |   |
|       Diluted                                                |   | $                       | 1.22   |   |                     | $      | 1.29   |   |   | $      | 2.99    |   |   | $ | 2.87 |   |

----

|  Nicor      Inc.                                   |   |                    |   |   |                     |   |   |   |   |   |    |   |
|---------------------------------------------------------|--------|-------------------------|--------|--------|--------------------------|--------|--------|--------|--------|--------|---------|--------|
|                                                    |   |                    |   |   |                     |   |   |   |   |   |    |   |
| PRELIMINARY FINANCIAL      HIGHLIGHTS                   |   |                    |   |   |                     |   |   |   |   |   |    |   |
| Unaudited      (millions, except per share data)        |   |                    |   |   |                     |   |   |   |   |   |    |   |
|                                                    |   |                    |   |   |                     |   |   |   |   |   |    |   |
|                                                    |   | Three      months ended |   |   | Twelve      months ended |   |
|                                                    |   | December      31        |   |   | December      31         |   |
|                                                    |   | 2007                    |   |   | 2006                     |   |   | 2007   |   |   | 2006    |   |
|                                                    |   |                    |   |   |                     |   |   |   |   |   |    |   |
| Operating      revenues                                 |   |                    |   |   |                     |   |   |   |   |   |    |   |
|     Gas      distribution           |   | $                       | 748.8  |   |                     | $      | 676.7  |   |   | $      | 2,627.5 |   |   | $ | 2,452.3 |   |
|     Shipping                        |   |                    | 110.3  |   |                     |   | 110.2  |   |   |   | 403.9   |   |   |   | 398.3 |   |
|     Other      energy ventures      |   |                    | 85.5   |   |                     |   | 80.8   |   |   |   | 244.5   |   |   |   | 215.9 |   |
|     Corporate      and eliminations |   |                    | (25.1  | )      |                     |   | (29.5  | )      |   |   | (99.6   | )      |   |   | (106.5 | ) |
|                                                    |   | $                       | 919.5  |   |                     | $      | 838.2  |   |   | $      | 3,176.3 |   |   | $ | 2,960.0 |   |
|                                                    |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Operating      income (loss)                            |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
|     Gas      distribution           |   | $                       | 40.4   |   |                     | $      | 43.7   |   |   | $      | 128.7   |   |   | $ | 123.9 |   |
|     Shipping                        |   |                    | 18.5   |   |                     |   | 18.0   |   |   |   | 45.4    |   |   |   | 47.5 |   |
|     Other      energy ventures      |   |                    | 18.2   |   |                     |   | 25.9   |   |   |   | 34.0    |   |   |   | 26.6 |   |
|     Corporate      and eliminations |   |                    | .1     |   |                     |   | 3.4    |   |   |   | (1.6    | )      |   |   | 4.5 |   |
|                                                    |   | $                       | 77.2   |   |                     | $      | 91.0   |   |   | $      | 206.5   |   |   | $ | 202.5 |   |
|                                                    |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Net      income                                         |   | $                       | 55.5   |   |                     | $      | 58.3   |   |   | $      | 135.2   |   |   | $ | 128.3 |   |
|                                                    |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Average      shares of common stock outstanding         |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
|         Basic   |   |                    | 45.2   |   |                     |   | 44.9   |   |   |   | 45.2    |   |   |   | 44.6 |   |
|         Diluted |   |                    | 45.3   |   |                     |   | 45.0   |   |   |   | 45.3    |   |   |   | 44.7 |   |
|                                                    |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
| Earnings      per average share of common stock         |   |                    |   |   |                     |   |   |   |   |   |    |   |   |   |   |   |
|         Basic   |   | $                       | 1.23   |   |                     | $      | 1.30   |   |   | $      | 2.99    |   |   | $ | 2.88 |   |
|         Diluted |   | $                       | 1.22   |   |                     | $      | 1.29   |   |   | $      | 2.99    |   |   | $ | 2.87 |   |

----

| Nicor      Inc.                                                                                                                                                                                                                   |   |                    |   |   | Preliminary      Operating Statistics Page 1 of 2 |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|--------|--------|--------------------------------------------------------|--------|
| Gas      Distribution                                                                                                                                                                                                             |   |                    |   |   |                                                   |   |   |   |   |   |   |   |
| Unaudited                                                                                                                                                                                                                         |   |                    |   |   |                                                   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                              |   | Three      months ended |   |   | Twelve      months ended                               |   |
|                                                                                                                                                                                                                              |   | December      31        |   |   | December      31                                       |   |
|                                                                                                                                                                                                                              |   | 2007                    |   |   | 2006                                                   |   |   | 2007 |   |   | 2006 |   |
| Operating      revenues (millions)                                                                                                                                                                                                |   |                    |   |   |                                                   |   |   |   |   |   |   |   |
|   Sales      - Residential                                                                                                                                                                                              |   | $                       | 523.8  |   |                                                   | $      | 463.6 |   |   | $ | 1,791.4 |   |   | $ | 1,671.1 |   |
|                     Commercial                                                                                                                              |   |                    | 120.7  |   |                                                   |   | 98.7 |   |   |   | 426.2 |   |   |   | 373.9 |   |
|                     Industrial                                                                                                                              |   |                    | 12.8   |   |                                                   |   | 10.9 |   |   |   | 47.6 |   |   |   | 42.8 |   |
|                                                                                                                                                                                                                              |   |                    | 657.3  |   |                                                   |   | 573.2 |   |   |   | 2,265.2 |   |   |   | 2,087.8 |   |
|   Transportation      - Residential                                                                                                                                                                                     |   |                    | 9.7    |   |                                                   |   | 10.1 |   |   |   | 31.1 |   |   |   | 32.0 |   |
|                                      Commercial                        |   |                    | 23.0   |   |                                                   |   | 26.6 |   |   |   | 76.7 |   |   |   | 82.1 |   |
|                                      Industrial                        |   |                    | 9.0    |   |                                                   |   | 9.8 |   |   |   | 37.5 |   |   |   | 41.0 |   |
|                                      Other                             |   |                    | .6     |   |                                                   |   | 2.1 |   |   |   | 10.6 |   |   |   | 3.7 |   |
|                                                                                                                                                                                                                              |   |                    | 42.3   |   |                                                   |   | 48.6 |   |   |   | 155.9 |   |   |   | 158.8 |   |
|   Other      revenues - Revenue taxes                                                                                                                                                                                   |   |                    | 35.7   |   |                                                   |   | 36.2 |   |   |   | 149.6 |   |   |   | 147.7 |   |
|                                       Environmental cost recovery |   |                    | 2.9    |   |                                                   |   | 4.4 |   |   |   | 10.9 |   |   |   | 11.6 |   |
|                                       Chicago Hub                 |   |                    | 5.8    |   |                                                   |   | 12.5 |   |   |   | 19.0 |   |   |   | 26.4 |   |
|                                       Other                       |   |                    | 4.8    |   |                                                   |   | 1.8 |   |   |   | 26.9 |   |   |   | 20.0 |   |
|                                                                                                                                                                                                                              |   |                    | 49.2   |   |                                                   |   | 54.9 |   |   |   | 206.4 |   |   |   | 205.7 |   |
|                                                                                                                                                                                                                              |   | $                       | 748.8  |   |                                                   | $      | 676.7 |   |   | $ | 2,627.5 |   |   | $ | 2,452.3 |   |
| Deliveries      (Bcf)                                                                                                                                                                                                             |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
|   Sales      - Residential                                                                                                                                                                                              |   |                    | 64.6   |   |                                                   |   | 64.3 |   |   |   | 201.8 |   |   |   | 185.9 |   |
|                     Commercial                                                                                                                              |   |                    | 14.8   |   |                                                   |   | 13.9 |   |   |   | 48.7 |   |   |   | 41.8 |   |
|                     Industrial                                                                                                                              |   |                    | 1.7    |   |                                                   |   | 1.6 |   |   |   | 5.7 |   |   |   | 5.0 |   |
|                                                                                                                                                                                                                              |   |                    | 81.1   |   |                                                   |   | 79.8 |   |   |   | 256.2 |   |   |   | 232.7 |   |
|   Transportation      - Residential                                                                                                                                                                                     |   |                    | 6.9    |   |                                                   |   | 6.2 |   |   |   | 19.7 |   |   |   | 17.0 |   |
|                                      Commercial                        |   |                    | 26.8   |   |                                                   |   | 25.8 |   |   |   | 84.6 |   |   |   | 80.4 |   |
|                                      Industrial                        |   |                    | 27.8   |   |                                                   |   | 28.6 |   |   |   | 107.8 |   |   |   | 108.6 |   |
|                                                                                                                                                                                                                              |   |                    | 61.5   |   |                                                   |   | 60.6 |   |   |   | 212.1 |   |   |   | 206.0 |   |
|                                                                                                                                                                                                                              |   |                    | 142.6  |   |                                                   |   | 140.4 |   |   |   | 468.3 |   |   |   | 438.7 |   |
|                                                                                                                                                                                                                              |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
| Degree      days                                                                                                                                                                                                                  |   |                    | 2,057  |   |                                                   |   | 1,873 |   |   |   | 5,756 |   |   |   | 5,174 |   |
| Warmer      than normal                                                                                                                                                                                                           |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
|    Degree      days                                                                                                                                                                                                |   |                    | (16    | )      |                                                   |   | (200 | ) |   |   | (74 | ) |   |   | (656 | ) |
|    Percent      (1)                                                                                                                                                                                                |   |                    | (1     | )      |                                                   |   | (10 | ) |   |   | (1 | ) |   |   | (11 | ) |
|                                                                                                                                                                                                                              |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
| Average      gas cost per Mcf sold                                                                                                                                                                                                |   | $                       | 6.83   |   |                                                   | $      | 6.02 |   |   | $ | 7.36 |   |   | $ | 7.44 |   |
|                                                                                                                                                                                                                              |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
| Customers at December 31      (thousands) (2)                                                                                                                                                                                     |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
|   Sales      - Residential                                                                                                                                                                                              |   |                    | 1,789  |   |                                                   |   | 1,807 |   |   |   |   |   |   |   |   |   |
|                     Commercial                                                                                                                              |   |                    | 128    |   |                                                   |   | 123 |   |   |   |   |   |   |   |   |   |
|                     Industrial                                                                                                                              |   |                    | 7      |   |                                                   |   | 7 |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                              |   |                    | 1,924  |   |                                                   |   | 1,937 |   |   |   |   |   |   |   |   |   |
|   Transportation      - Residential                                                                                                                                                                                     |   |                    | 191    |   |                                                   |   | 166 |   |   |   |   |   |   |   |   |   |
|                                      Commercial                        |   |                    | 54     |   |                                                   |   | 57 |   |   |   |   |   |   |   |   |   |
|                                      Industrial                        |   |                    | 5      |   |                                                   |   | 6 |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                              |   |                    | 250    |   |                                                   |   | 229 |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                              |   |                    | 2,174  |   |                                                   |   | 2,166 |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                              |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
| (1)      Normal weather for Nicor Gas' service territory, for the purposes of this      report, is considered to be 5,830 degree days per year.                                                                                   |   |
| (2)      The company redefined the customer count methodology in 2006 in      conjunction with its new customer care and billing system.                                                                                          |   |                    |   |   |                                                   |   |   |   |   |

----

| Nicor      Inc.                                  |   |                    |   |   | Preliminary      Operating Statistics Page 2 of 2 |   |
|--------------------------------------------------|--------|-------------------------|--------|--------|--------------------------------------------------------|--------|
| Shipping                                         |   |                    |   |   |                                                   |   |   |   |   |   |   |   |
| Unaudited                                        |   | Three      months ended |   |   | Twelve      months ended                               |   |
|                                             |   | December      31        |   |   | December      31                                       |   |
|                                             |   | 2007                    |   |   | 2006                                                   |   |   | 2007 |   |   | 2006 |   |
|                                             |   |                    |   |   |                                                   |   |   |   |   |   |   |   |
| Operating      revenues (millions)               |   | $                       | 110.3  |   |                                                   | $      | 110.2 |   |   | $ | 403.9 |   |   | $ | 398.3 |   |
|                                             |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
| Operating      income (millions)                 |   | $                       | 18.5   |   |                                                   | $      | 18.0 |   |   | $ | 45.4 |   |   | $ | 47.5 |   |
|                                             |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
| Twenty-foot      equivalent units (TEU)          |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
|     shipped      (thousands) |   |                    | 54.4   |   |                                                   |   | 55.8 |   |   |   | 206.6 |   |   |   | 203.1 |   |
|                                             |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
| Revenue      per TEU                             |   | $                       | 2,027  |   |                                                   | $      | 1,975 |   |   | $ | 1,955 |   |   | $ | 1,961 |   |
|                                             |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
| Ports served                                |   |                    | 26     |   |                                                   |   | 27 |   |   |   |   |   |   |   |   |   |
|                                             |   |                    |   |   |                                                   |   |   |   |   |   |   |   |   |   |   |   |
| Vessels      operated                            |   |                    | 19     |   |                                                   |   | 18 |   |   |   |   |   |   |   |   |   |

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