| Symbol | Description | Uses |
| u221 | 3 |
| File | Line number | Procedure | Code |
| ./pkg/flt/flt_bilinear.F | 173 | FLT_TRILINEAR |
_RL u111, u121, u221, u211, u112, u122, u222, u212 |
| ./pkg/flt/flt_bilinear.F | 266 | FLT_TRILINEAR |
u221 = u(nfxp,nfyp,nfz,bi,bj) |
| ./pkg/flt/flt_bilinear.F | 276 | FLT_TRILINEAR |
& + ddx*ddy*(1-ddz)*u221 + (1-ddx)*ddy*(1-ddz)*u121 |