# from ArcModel.xlsx 7/10/2012, grating-alignment.xlsx/120414
# Grating	l/mm	 Gam0      y0	  dy/arang
PG0300	 300.00	 0.000    2055.7	 0.307        
PG0900	 903.89	-0.265    2042.2	-0.156
PG1300	1299.76	-0.265    2054.3	 0.198
PG1800	1801.89	-0.265    2050.1	-0.067
PG2300	2302.60	-0.265    2059.5	 0.127
PG3000	3000.55	-0.265    2060.6	-0.151


