"Display-evidence item","Fixed fictional example","Your actual record","Meaning / next question"
"Ideal geometry","Level horizontal circular cylinder, flat ends, no internal obstructions","","INPUT: actual tank identity, orientation and geometry"
"Internal radius R (m)","1","","FIXED fictional dimension; not a surveyed tank"
"Straight internal length L (m)","2","","FIXED fictional dimension"
"Full geometric volume (m3)","6.283","","FIXED rounded example, not usable capacity"
"Fictional quarter-height comparison","Depth 0.5 m; height 25%; stored 1.228 m3; volume 19.55%","","ILLUSTRATION: percentages use full internal diameter and full geometric volume"
"Fictional midpoint comparison","Depth 1 m; height 50%; stored 3.142 m3; volume 50%","","ILLUSTRATION: midpoint is valid by symmetry"
"Fictional three-quarter comparison","Depth 1.5 m; height 75%; stored 5.055 m3; volume 80.45%","","ILLUSTRATION: equal height increments contain unequal volumes"
"Displayed reading and stated quantity","","","INPUT: depth, percent level span or already-linearized volume?"
"Level zero reference","","","INPUT: internal bottom or another documented reference?"
"Configured span endpoints","","","INPUT: full height or only part of the tank?"
"Conversion already applied?","","","INPUT: use approved record; do not convert volume a second time"
"Approved geometry / level-volume record","","","INPUT: document identity and applicability to this tank"
"Dished/conical ends, tilt or displacement","","","INPUT: identify why the ideal example may not apply"
"Stored-volume interpretation","","","MANUAL: supported by stated evidence or unresolved"
"Usable-water assessment still needed","","","MANUAL: separate operating limits and reserves; no autonomy output"
"Use","Manual worksheet with fixed rounded fictional examples; no formulas or live tank calculator.","Import UTF-8 comma-separated text. Widen and wrap columns; save a spreadsheet copy.","Fill actual-record fields from approved records. No tank entry, dipping, filling trial or live setting changes."
"Source context","https://mathworld.wolfram.com/CircularSegment.html","https://portal.endress.com/wa001/dla/5000369/4731/000/02/BA00298FEN_1310.pdf","Circular-segment geometry, plus Liquicap M level/volume distinction printed pages 64-66. Original fictional dimensions; not a calibration."