Table:
text: Guitar
Standard
Standard
String_ Scientific_pitch Helmholtz_pitch Interval_from_middle_C Frequency_Hz_
1st E 4 e` major third above 329.63
2nd B 3 b minor second below 246.94
3rd G 3 g perfect fourth below 196.00
4th D 3 d minor seventh below 146.83
5th A 2 A minor tenth below 110.00
6th E 2 E minor thirteenth below 82.41

Question: What is the lowest frequency at which the Hemholtz pitch on guitar is d?

Question: What is the scientific pitch when the Helmholtz pitch is D under guitar?