If the said decree be not complied with in good and sufficient manner, and within the time appointed, the author of the nuisance, or the owner or occupier, as the case may be, shall be liable, in the case of nuisances under sub-sections (1), (2), (3), (4), (5), (7), . . . F1 and (11) in section sixteen of this Act, F2on summary conviction to a fine not exceeding level 2 on the standard scale; and if the said interdict be knowingly infringed by the act or authority of the owner or occupier, such owner or occupier shall be liable for every such offence F3on summary conviction to a fine not exceeding level 2 on the standard scale; and in the case of nuisances under sub-sections (6), (8), . . . F1 in the said section, the party not complying with or infringing such decree shall be liable to a penalty not exceeding F4F5level 5 on the standard scale and to a further fine not exceeding £50 for every day on which the offence continues after conviction therefor . . . F1