class Grid(object):
    def __init__(self, lon, lat, z, time, Nlon, Nlat, Nz, Nt, Ulon, Ulat, Uz, Ut):
        self.lon  = lon
        self.lat  = lat
        self.z    = z
        self.time = time
        self.Nlon = Nlon
        self.Nlat = Nlat
        self.Nz   = Nz
        self.Nt   = Nt
        self.Ulon = Ulon
        self.Ulat = Ulat
        self.Uz   = Uz
        self.Ut   = Ut