Formant-frequency values for 14 vowels
spoken by Richard Fontana, September 2000

                Frequencies (Hz)
          Start glide         End glide
         F1   F2  F2-F1     F1   F2  F2-F1
heed    327  2265  1938    248  2298  2050
hid     372  2208  1836    349  1904  1555    
hayed   530  2152  1622    361  2332  1971
head    642  1983  1341    597  1938  1341
had     800  1668   868    732  1803  1071
how'd   935  1476   541    563   845   282
hide    823  1217   394    541  2028  1487
hod     913  1104   191    777  1363   586
hawed   563   834   271    451   755   304
hoard   349   676   327    315   608   293
HUD     687  1149   462    575  1025   450
hood    485  1093   608    372  1194   822
hoed    473   890   417    282   823   541
who'd   361   935   574    270   901   631