On Mon, 24 Oct 2011, Bert Gunter wrote:
> Where's TDS? -- 'cause it's sure not in your data frame.
Bert,
summary(burns.tds.anal)
site sampdate param quant
BC-3 :460 Min. :1992-03-27 Ca : 65 Min. : 1.00
BC-2 :107 1st Qu.:1994-09-21 Cl :148 1st Qu.: 14.03
BC-1 : 62 Median :1996-05-21 Cond: 94 Median : 64.40
BC-4 : 38 Mean :1998-11-19 Mg : 65 Mean : 189.47
BC-1.5 : 28 3rd Qu.:2002-10-31 Na : 34 3rd Qu.: 285.75
BC-0.5 : 12 Max. :2011-05-18 SO4 :155 Max. :2058.00
(Other): 11 TDS :157 NA's : 8.00
Bottom row of the 'param' column.
Rich