Table I: Monoisotopic Masses of the Water Cluster Series (H3O++X H2O) in a.m.u. X = 0 - 33 X = 34 - 67 X = 68 - 101 X = 102 - 135 X = 136 - 169 19.0184 631.3788 1243.7392 1856.0996 2468.4600 37.0290 649.3894 1261.7498 1874.1102 2486.4706 55.0396 667.4000 1279.7604 1892.1208 2504.4812 73.0502 685.4106 1297.7710 1910.1314 2522.4918 91.0608 703.4212 1315.7816 1928.1420 2540.5024 109.0714 721.4318 1333.7922 1946.1526 2558.5130 127.0820 739.4424 1351.8028 1964.1632 2576.5236 145.0926 757.4530 1369.8134 1982.1738 2594.5342 163.1032 775.4636 1387.8240 2000.1844 2612.5448 181.1138 793.4742 1405.8346 2018.1950 2630.5554 199.1244 811.4848 1423.8452 2036.2056 2648.5660 217.1350 829.4954 1441.8558 2054.2162 2666.5766 235.1456 847.5060 1459.8664 2072.2268 2684.5872 253.1562 865.5166 1477.8770 2090.2374 2702.5978 271.1668 883.5272 1495.8876 2108.2480 2720.6084 289.1774 901.5378 1513.8982 2126.2586 2738.6190 307.1880 919.5484 1531.9088 2144.2692 2756.6296 325.1986 937.5590 1549.9194 2162.2798 2774.6402 343.2092 955.5696 1567.9300 2180.2904 2792.6508 361.2198 973.5802 1585.9406 2198.3010 2810.6614 379.2304 991.5908 1603.9512 2216.3116 2828.6720 397.2410 1009.6014 1621.9618 2234.3222 2846.6826 415.2516 1027.6120 1639.9724 2252.3328 2864.6932 433.2622 1045.6226 1657.9830 2270.3434 2882.7038 451.2728 1063.6332 1675.9936 2288.3540 2900.7144 469.2834 1081.6438 1694.0042 2306.3646 2918.7250 487.2940 1099.6544 1712.0148 2324.3752 2936.7356 505.3046 1117.6650 1730.0254 2342.3858 2954.7462 523.3152 1135.6756 1748.0360 2360.3964 2972.7568 541.3258 1153.6862 1766.0466 2378.4070 2990.7674 559.3364 1171.6968 1784.0572 2396.4176 3008.7780 577.3470 1189.7074 1802.0678 2414.4282 3026.7886 595.3576 1207.7180 1820.0784 2432.4388 3044.7992 613.3682 1225.7286 1838.0890 2450.4494 3062.8098