Liquid Depth (inches)	Barrels	Air Gap (inches)
3	1.8	117
6	5	114
9	9.1	111
12	14	108
15	19.4	105
18	25.3	102
21	31.6	99
24	38.3	96
27	45.3	93
30	52.9	90
33	57.4	87
36	68.2	84
39	76.1	81
42	84.3	78
45	92.5	75
48	100.8	72
51	109.3	69
54	117.8	66
57	126.3	63
60	135.2	60
63	144.1	57
66	152.6	54
69	161.1	51
72	169.6	48
75	177.9	45
78	186.1	42
81	194.3	39
84	202.2	36
87	213	33
90	217.5	30
93	225.1	27
96	232.1	24
99	238.8	21
102	245.6	18
105	251	15
108	256.6	12
111	261.3	9
114	265.4	6
117	268.6	3
120	270.4	0