| Surface types | Pixel value range | Description |
| Clean ice | 0* - 700 | Exposed ice dominating most of the surface at the end of the ablation season |
| Dirty ice | 700 - 800 and 1500 - 3500** | Mixed ice and debris; common at two locations: limited pixels near slush zone and large coverage at lower reach with debris cover |
| Slush zone | 800 - 900 | Small area in transition from snow face to ice face |
| Snow | 900 - 1500 | Present at the accumulation zone, mostly within the cirques at highest elevations; overall small amount in late summer |
| Debris cover | >3500** | Prominent feature at ablation zones of debris-covered glacier; possible overestimation when inaccurate glacier extent includes moraines and rock outcrops |