Data presented on this page:

Amount of Precipitation (cm) Collected by Open Buckets* 
 

	Under Canopy					Open
Date	#1	#2	#3	average	std dev	#4
2/14/98	2.99	3.06	3.42	3.16	0.23	3.38
2/21/98	3.71	3.69	4.50	3.97	0.46	4.61
2/27/98	1.77	2.02	2.73	2.17	0.50	2.30
3/5/98	0.67	0.69	0.77	0.71	0.05	0.79
3/15/98	8.08	8.04	9.51	8.54	0.84	9.59
3/22/98	6.91	5.61	5.63	6.05	0.74	6.32
3/29/98	0.00	0.00	0.00	0.00	0.00	0.00
4/4/98	3.07	2.89	3.54	3.17	0.34	3.55
average	3.40	3.25	3.76			3.82
std dev	2.83	2.61	2.96			3.08

Total precipitation collected in the open bucket for 8 weeks: 30.54cm
Extrapolated total annual precipitation: 198.51cm
Annual precipitation for New Haven County (1951-73): 118.69cm
    (as reported by the Soil Survey)

* Note: The collectors under the funnels were undersized so that they overflowed during 5 out of 8 weeks.  As a result, amount of precipitation measured in these collectors is not presented.

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Calcium Concentration (mg/L) in Precipitation Collected by Open Buckets
 

		Under Canopy					Open
Date	Precip (cm) *	#1	#2	#3	Avg	StdDev	#4
2/7	2.01	0.197	0.735	0.674	0.535	0.294	0.017
2/13	3.38	0.114	0.285	0.427	0.275	0.157	0.029
2/21	4.61	0.174	0.256	0.406	0.279	0.118	0.126
3/5	0.79	0.559	0.768		0.664	0.148	0.253
Weighted Avg (by precip.)		0.188	0.392	0.467			0.085
Average		0.261	0.511	0.503			0.106
StdDev		0.202	0.278	0.149			0.109

Weighted average for all buckets under canopy: 0.349
Average for all buckets under canopy: 0.418
Std Dev for all buckets under canopy: 0.24

Data taken out as bad data: [Ca++] for collector #3 on 3/5 = 1.459mg/L

* Precipitation amount for 2/7 recorded by the Water Company (?); not measured as part of this undertaking
 
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Calcium Concentration (mg/L) in Precipitation Collected by Funnels

		Under Canopy					Open
Date	Precip (cm) *	#1	#2	#3	Avg	StdDev	#4
2/7	2.01	0.493	0.767	0.516	0.592	0.152	0.035
2/13	3.38	0.376	0.105	0.287	0.256	0.138	0.025
2/21	4.61	0.420	0.290	0.309	0.340	0.070	0.106
3/5	0.79	0.656	0.561	0.626	0.614	0.048	0.165
Weighted Avg (by precip.)		0.437	0.341	0.364			0.071
Average		0.486	0.431	0.435			0.083
StdDev		0.123	0.292	0.164			0.066

Weighted average for all buckets under canopy: 0.381
Average for all buckets under canopy: 0.451
Std Dev for all buckets under canopy: 0.19

* Precipitation amount for 2/7 recorded by the Water Company (?); not measured as part of this undertaking
 
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Magnesium Concentration (mg/L) in Precipitation Collected by Open Buckets

		Under Canopy					Open
Date	Precip (cm) *	#1	#2	#3	Avg	StdDev	#4
2/7	2.01	0.056	0.175	0.170	0.134	0.067	0.011
2/13	3.38	0.090	0.096	0.152	0.112	0.034	0.084
2/21	4.61	0.006	0.023	0.061	0.030	0.028	0.000
3/5	0.79	0.084	0.097		0.091	0.009	0.012
Weighted Avg (by precip.)		0.047	0.080	0.114			0.029
Average		0.059	0.098	0.128			0.027
StdDev		0.038	0.062	0.058			0.039

Weighted average for all buckets under canopy: 0.080
Average for all buckets under canopy: 0.092
Std Dev for all buckets under canopy: 0.06

Data taken out as bad data: [Mg++] for collector #3 on 3/5 = .303
 
* Precipitation amount for 2/7 recorded by the Water Company (?); not measured as part of this undertaking
 
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Magnesium Concentration in Precipitation Collected by Funnels

		Under Canopy					Open
Date	Precip (cm) *	#1	#2	#3	Avg	StdDev	#4
2/7	2.01	0.114	0.231	0.144	0.163	0.061	0.012
2/13	3.38	0.123	0.082	0.125	0.110	0.024	0.076
2/21	4.61	0.055	0.040	0.036	0.044	0.010	0.000
3/5	0.79	0.124	0.106	0.122	0.117	0.010	0.000
Weighted Avg (by precip.)		0.092	0.094	0.090			0.026
Average		0.104	0.115	0.107			0.022
StdDev		0.033	0.082	0.048			0.036

Weighted average for all buckets under canopy: 0.092
Average for all buckets under canopy: 0.108
Std Dev for all buckets under canopy: 0.05

* Precipitation amount for 2/7 recorded by the Water Company (?); not measured as part of this undertaking
 
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Sodium Concentration (mg/L) in Precipitation Collected by Open Buckets

		Under Canopy					Open
Date	Precip (cm) *	#1	#2	#3	Avg	StdDev	#4
2/7	2.01			12.137	12.137
2/13	3.38	1.377	1.401	1.523	1.434	0.078	1.468
Weighted Avg (by precip.)		1.377	1.401	5.478			1.468
Average		1.377	1.401	6.830			1.468
StdDev				7.505

Weighted average for all buckets under canopy: 2.752
Average for all buckets under canopy: 4.110
Std Dev for all buckets under canopy: 5.35

* Precipitation amount for 2/7 recorded by the Water Company (?); not measured as part of this undertaking
 
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Sodium Concentration (mg/L) in Precipitation Collected by Funnels

		Under Canopy					Open
Date	Precip (cm) *	#1	#2	#3	Avg	StdDev	#4
2/7	2.01			1.613	1.613
2/13	3.38	1.477	1.454	1.578	1.503	0.066	1.592
Weighted Avg (by precip.)		1.477	1.454	1.591			1.592
Average		1.477	1.454	1.595			1.592
StdDev				0.025

Weighted average for all buckets under canopy:
Average for all buckets under canopy:
Std Dev for all buckets under canopy:

Data taken out as bad data: [Na+] for collector #2 on 2.7 = 22.8mg/L

* Precipitation amount for 2/7 recorded by the Water Company (?); not measured as part of this undertaking

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