fixed type in py_cithr

mvcm/ancillary.pyx

@@ -121,7 +121,7 @@ def py_snow_mask(char *satname, unsigned char lsf):
 @cython.initializedcheck(False)
 def py_cithr(int key, np.ndarray[float, ndim=1] sec_vza, np.ndarray[float, ndim=1] bt11):
 
-    cdef np.ndarray tci_thr = np.zeros((bt11.shape[0], ), order='C', dtype=np.float)
+    cdef np.ndarray tci_thr = np.zeros((bt11.shape[0], ), order='C', dtype=np.float32)
 
     for i in range(bt11.shape[0]):
         tci_thr[i] = cithr(key, sec_vza[i], bt11[i])