Liquid Depth (inches)	Barrels	Air Gap (inches)
3	10.35	84
6	20.70	81
9	31.05	78
12	41.40	75
15	51.75	72
18	62.10	69
21	72.45	66
24	82.80	63
27	93.15	60
30	103.50	57
33	113.85	54
36	124.20	51
39	134.55	48
42	144.90	45
45	155.25	42
48	165.60	39
51	175.95	36
54	186.30	33
57	196.65	30
60	207.00	27
63	217.35	24
66	227.70	21
69	238.05	18
72	248.40	15
75	258.75	12
78	269.10	9
81	279.45	6
84	289.80	3
87	300.15	0