Liquid Depth (inches)	Barrels	Air Gap (inches)
3	1.40	117
6	3.92	114
9	7.15	111
12	10.92	108
15	15.14	105
18	19.74	102
21	24.66	99
24	29.87	96
27	35.34	93
30	41.02	90
33	46.90	87
36	52.94	84
39	59.13	81
42	65.45	78
45	71.87	75
48	78.38	72
51	84.95	69
54	91.58	66
57	98.24	63
60	104.91	60
63	111.59	57
66	118.25	54
69	124.88	51
72	131.45	48
75	137.96	45
78	144.38	42
81	150.69	39
84	156.89	36
87	162.93	33
90	168.81	30
93	174.49	27
96	179.95	24
99	185.17	21
102	190.09	18
105	194.69	15
108	198.91	12
111	202.68	9
114	205.91	6
117	208.43	3
120	209.83	0