| S. No. | Category | Number | Isolates |
| 1 | Large sized (>25 µm) | 9 | MP-1, MP-3, MP-18, MP-20, MP-31, MP-40, MP-52, MP-56, MP-59 |
| 2 | Medium sized (21–25 µm) | 30 | MP-2, MP-7, MP-9, MP-10, MP-13, MP-16, MP-17, MP-19, MP-24, MP-25, MP-26, MP-27, MP-30, MP-34, MP-35, MP-36, MP-41, MP-42, MP-45, MP-47, MP-49, MP-51, MP-53, MP-54, MP-55, MP-57, MP-58, MP-62, MP-63, MP-65 |
| 3 | Small sized (<21 µm) | 26 | MP-4, MP-5, MP-6, MP-8, MP-11, MP-12, MP-14, MP-15, MP-21, MP-22, MP-23, MP-28, MP-29, MP-32, MP-33, MP-37, MP-38, MP-39, MP-43, MP-44, MP-46, MP-48, MP-50, MP-60, MP-61, MP-64 |
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