Table 2. MAR phenotypes and MAR indices patterns in Citrobacter spp. and E. coli isolated from the rivers.

Citrobacter species (n = 5)
MAR phenotypesa	No of antibiotics showing resistance	No of phenotype observed	MAR index
GM-AK-AUG-AP-MEM-CTX-CXM-CIP-NOR-NI-C-PB-CO-NA-TS-T-DXT	17	1	0.94
GM-AUG-AP-MEM-CTX-CXM-NI-C-PB-CO-NA-TS-T-DXT	14	1	0.78
AUG-AP-CTX-CXM-NI-C-PB-CO-NA-TS-T-DXT	12	2	0.67
AUG-AP-CTX-CXM-CIP-NI-PB-CO-TS-T-DXT	11	1	0.61
E. coli (n = 13)
GM-AUG-AP-MEM-CTX-CXM-CIP-NOR-NI-C-PB-CO-TS-T-DXT	15	1	0.83
GM-AUG-AP-CTX-CXM-CIP-NOR-NI-C-PB-CO-NA-TS-T-DXT	15	1	0.83
GM-AK-AP-MEM-CTX-CXM-CIP-NOR-C-PB-NA-TS-T-DXT	14	1	0.78
GM-AP-CTX-CXM-NI-C-PB-CO-NA-TS-T-DXT	12	1	0.67
AUG-AP-CTX-CXM-NOR-NI-PB-CO-TS-T-DXT	11	1	0.61
GM-AP-CTX-CXM-CIP-NOR-NI-NA-TS-T	10	1	0.56
GM-AP-CTX-CXM-CIP-NOR-NA-TS-T-DXT	10	1	0.56
AUG-AP-CIP-NI-C-PB-CO-TS-T-DXT	10	1	0.56
AUG-AP-NI-C-PB-CO-TS-T-DXT	9	1	0.50
AUG-CTX-CXM-NI-C-PB-CO-T-DXT	9	1	0.50
AUG-AP-NI-PB-CO-TS-T-DXT	8	1	0.44
AUG-AP-NI-PB-CO-T-DXT	7	1	0.39
NI-PB-CO-NA-TS-T-DXT	7	1	0.39

^a represents antibiotics code which are explained in Fig 4 footnotes.