Penicillin.G Tetracycline Streptomycin Erythromycin Chloroamphenicol
        29.6         32.6          5.8         21.6             29.2
        24.3         30.8          6.2         17.4             32.8
        28.5         34.8         11.0         18.3             25.0
        32.0         27.3          8.3         19.0             24.2