x      y
120000 0.925275
130000 None
140000 None
150000 0.917665
160000 None
170000 None
180000 0.90937
190000 0.93
200000 None
210000 0.89389
220000 None
230000 None
240000 0.88019
250000 None
260000 None
270000 0.8825
280000 None
290000 None
300000 0.89329
310000 None
320000 None
330000 0.893405
340000 None
350000 None
360000 0.8939