pre_text: AMERICAN TOWER CORPORATION AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Tabular amounts in millions, unless otherwise disclosed) 23. SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) Selected quarterly financial data for the years ended December 31, 2019 and 2018 is as follows (in millions, except per share data): (1) Represents Operating expenses, exclusive of Depreciation, amortization and accretion, Selling, general, administrative and development expense, and Other operating expenses.
table: Three Months Ended
table: March 31, June 30, September 30, December 31, Year Ended, December 31,
table: 2019:
table: Operating revenues $1,813.4 $1,889.6 $1,953.6 $1,923.7 $7,580.3
table: Costs of operations (1) 543.4 563.3 559.9 550.2 2,216.8
table: Operating income 614.9 683.9 728.3 661.3 2,688.4
table: Net income 407.6 434.3 505.3 569.4 1,916.6
table: Net income attributable to American Tower Corporation stockholders 397.4 429.1 498.6 562.7 1,887.8
table: Net income attributable to American Tower Corporation common stockholders 397.4 429.1 498.6 562.7 1,887.8
table: Basic net income per share attributable to American Tower Corporation common stockholders 0.90 0.97 1.13 1.27 4.27
table: Diluted net income per share attributable to American Tower Corporation common stockholders 0.89 0.96 1.12 1.26 4.24
question: Analyse this data from a financial earnings document. What was the change in Diluted net income per share attributable to American Tower Corporation common stockholders between Three Months Ended  March and June?