Courtesy of Rick Hall, About.com Nutrition Guide nutrition.about.com

Nutrient	Units	1 cup, chopped  ------- 128.000 g
Proximates
Water	g	112.371
Energy	kcal	55.040
Energy	kj	230.400
Protein	g	1.318
Total lipid (fat)	g	0.243
Carbohydrate, by difference	g	12.979
Fiber, total dietary	g	3.840
Ash	g	1.114
Minerals
Calcium, Ca	mg	34.560
Iron, Fe	mg	0.640
Magnesium, Mg	mg	19.200
Phosphorus, P	mg	56.320
Potassium, K	mg	413.440
Sodium, Na	mg	44.800
Zinc, Zn	mg	0.256
Copper, Cu	mg	0.060
Manganese, Mn	mg	0.182
Selenium, Se	mcg	1.408
Vitamins
Vitamin C, ascorbic acid	mg	11.904
Thiamin	mg	0.124
Riboflavin	mg	0.076
Niacin	mg	1.188
Pantothenic acid	mg	0.252
Vitamin B-6	mg	0.188
Folate	mcg	17.920
Vitamin B-12	mcg	0.000
Vitamin A, IU	IU	36005.120
Vitamin A, RE	mcg_RE	3600.640
Vitamin E	mg_ATE	0.589
Lipids
Fatty acids, saturated	g	0.038
4:0	g	0.000
6:0	g	0.000
8:0	g	0.000
10:0	g	0.000
12:0	g	0.003
14:0	g	0.001
16:0	g	0.029
18:0	g	0.001
Fatty acids, monounsaturated	g	0.010
16:1	g	0.003
18:1	g	0.008
20:1	g	0.000
22:1	g	0.000
Fatty acids, polyunsaturated	g	0.099
18:2	g	0.086
18:3	g	0.013
18:4	g	0.000
20:4	g	0.000
20:5	g	0.000
22:5	g	0.000
22:6	g	0.000
Cholesterol	mg	0.000
Phytosterols	mg	15.360
Amino acids
Tryptophan	g	0.014
Threonine	g	0.049
Isoleucine	g	0.052
Leucine	g	0.055
Lysine	g	0.051
Methionine	g	0.009
Cystine	g	0.010
Phenylalanine	g	0.041
Tyrosine	g	0.026
Valine	g	0.056
Arginine	g	0.055
Histidine	g	0.020
Alanine	g	0.076
Aspartic acid	g	0.175
Glutamic acid	g	0.259
Glycine	g	0.038
Proline	g	0.037
Serine	g	0.045

USDA Nutrient Database for Standard Reference, Release 12 (March 1998)