Ciprofloxacin and Levaquin (Levofloxacin) are in the same drug class (fluroquinolones). It makes sense that you would be allergic to both. You probably are allergic to other drugs in the same class such as moxifloxacinI, Ofloxacin, etc.s a fluoroquinolone, it is in the same class of agents as ciprofloxacin, enoxacin, levofloxacin, lomefloxacin, norfloxacin, and ofloxacin. Nalidixic acid is also a quinolone drug.
STC is calculated by taking the Transmission Loss (TL) values tested at 16 standard frequencies over the range of 125 Hz to 4000 Hz and plotted on a graph. Your curve (what you actually measured) is compared to standard STC reference curves (see appendix).
STC Rating. A commonly used measure of soundproofing effectiveness is the sound transmission class, or STC. It is a single number that attempts to characterize the overall ability of a material to reduce the transmission of noise.Any reputable product that is marketed as a good soundproofing material will include the STC in its product literature.t is a single number that attempts to characterize the overall ability of a material to reduce the transmission of noise. Any reputable product that is marketed as a good soundproofing material will include the STC in its product literature.