This is CASE4.INP, a test program for CO2SYS. It works for case 4.
line1, 35., 3., 55., 20., 0, 5, 1000, 2200., 8.
line2, 35., 0, 0, 20, 0, 5, 1000, 2200., 7.9
line3, 33., 2., 122., 15, 0, 5, 0, 2200., 7.8
line4, 35., 0, 0, 20, 0, 15, 0, 2100., 7.7
line5, 33., 3., 2., 25, 0, 10, 100, 2100., 7.6