<font color='black' size='2' face='arial'> <div style="FONT-FAMILY: arial,helvetica; COLOR: black; FONT-SIZE: 10pt"> <div id=AOLMsgPart_1_892f72d3-22dc-4a5a-bb87-23b0088234b5><FONT color=black size=2 face=arial> <div><FONT face="Arial, Helvetica, sans-serif">I decided to put the data I gathered this season on Grand geyser into a spreadsheet to analyze the results. I was in Yellowstone from May 11, 2011 until October 3, 2011. I acquired data beyond just times (code such as T2C) on 164 eruptions. I was an observer on about 95% of them and received the information on the rest directly from gazers. While there were 12 days on which I have no data (2 days not in the park, several days monitoring Fan and Mortar instead, etc.), there are 29 days on which I have data on 2 eruptions. Here is a summary of the results.</FONT></div> <div> </div> <div>1. Turban and Vent continued (C) when Grand stopped on 66 eruptions and quit (Q) on 98 before restarting.</div> <div> </div> <div>2. Grand (G) started first 25 times, Turban (T) started first 129 times and 10 were unknown (Grand knew I was coming and decided to start before I was close enough to see which was first). Grand starts were somewhat clustered as there were several periods of 2 weeks or more when no Grand starts were recorded.</div> <div> </div> <div>3. The burst average recorded was 1.555 with N = 164. This included the 6-burst eruption in May and eleven 3-burst eruptions. The 6-burst eruption was a Grand start but only one 3-burst eruption was a Grand start.</div> <div> </div> <div>4. There were 10 eruptions coded as 2* (meaning an unusually long second burst) with 5 Turban starts, 4 Grand starts and 1 unknown. There were 2 coded as 3# (meaning an unusually long third burst) and both were Turban starts.</div> <div> </div> <div>5. Monthly burst averages varied during the season as illustrated in the table below.</div> <div> </div> <div>Month      # observations     Burst average</div> <div>May-------------24----------------------1.792</div> <div>Jun--------------36----------------------1.556</div> <div>Jul---------------40----------------------1.450</div> <div>Aug-------------31----------------------1.613</div> <div>S-O-------------33----------------------1.455</div> <div> </div> <div>Total            164                    1.555       </div> <div> </div> <div>In drawing any conclusions it must be remembered that these are only about 40% of the eruptions of Grand during the time period described.</div> <div> </div> <div>If anyone would like a copy of the data please contact me at <A href="mailto:jimscheir@aol.com">jimscheir@aol.com</A>. It is in Excel 2007. </div> <div> </div> <div> </div> <div>Jim Scheirer</div> </FONT></div> </div> </font>