replace ZMIN=4.e8 with ZMIN=0. as in C-grid code (changes results, but not tested in testreport)
replace ZMIN=4.e8 with ZMIN=0. as in C-grid code (changes results, but
not tested in testreport)

altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h