Raw data

For posterity, I thought I'd post the results from the beginning of my effort. You'll see the dates, miles and gallons for each fill up. Also, you'll see the cumulative days of the experiment and the standard deviation in mileage based on the results of each fill up. Note that no pre-experiment data exists, so you'll just have to take my word that the average mileage at that time was 14.9 m.p.g. based on the "average mileage" readout of the display unit in the car. I'd like to include graphs, but I haven't yet been able to figure out how publish them in a readable fashion. Sigh...

Date	Miles	Gallons to fill	Mileage	5-tank mov. Avg.
9/5/05	377.2	18.714	20.16
9/9/05	346.7	19.541	17.74
9/16/05	381.5	18.948	20.13
9/24/05	404.3	20.126	20.09
10/1/05	401.3	18.293	21.94	20.01
10/8/05	414.1	19.821	20.89	20.16
10/14/05	429.6	18.545	23.17	21.24
10/28/05	401.0	20.399	19.66	21.15
11/6/05	446.1	20.703	21.55	21.44
11/16/05	443.8	19.190	23.13	21.68
11/23/05	403.2	19.821	20.34	21.57
12/3/05	425.2	19.299	22.03	21.34
12/14/05	434.1	19.044	22.79	21.97
12/21/05	414.7	19.484	21.28	21.92
12/29/05	442.2	17.604	25.12	22.31
1/6/06	404.4	19.777	20.45	22.34
1/14/06	415.8	18.904	22.00	22.33
1/19/06	438.9	18.739	23.42	22.45
1/27/06	454.7	20.066	22.66	22.73
2/5/06	415.0	19.402	21.39	21.98
2/14/06	432.3	20.252	21.35	22.16
2/21/06	437.8	20.282	21.59	22.08
3/2/06	454.2	20.261	22.42	21.88
3/9/06	435.2	19.351	22.49	21.85
3/22/06	444.0	20.321	21.85	21.94
3/30/06	456.7	21.321	21.42	21.95
4/6/06	456.4	21.361	21.37	21.91
4/17/06	444.7	19.291	23.05	22.04
4/25/06	475.5	20.099	23.66	22.27
5/2/06	416.0	16.217	25.65	23.03
5/11/06	416.8	19.624	21.24	22.99
5/20/06	482.3	20.322	23.73	23.47
Totals:	13645.7	625.1	21.83
Standard deviation:		1.60	m.p.g.
Days of experiment:		257