A filter is applied to the strontium table. What does this print? `import pandas as pd; df = pd.DataFrame({"sym": ["Sr", "Ba", "Cd"], "ie": [549, 503, 868]}); print(len(df[df["ie"] > 540]))` | StemPy Lab
A filter is applied to the strontium table. What does this print? import pandas as pd; df = pd.DataFrame({"sym": ["Sr", "Ba", "Cd"], "ie": [549, 503, 868]}); print(len(df[df["ie"] > 540]))