Trace: find skipped value (Java)

Line 1: int[] readings = {6, 2, 9, 4};1int[] readings = {6, 2, 9, 4};
Line 2: int total = 0;2int total = 0;
Line 3: int i = 1;3int i = 1;
Line 4: while (i < readings.length) {4while (i < readings.length) {
Line 5, indented 1 level: total = total + readings[i];5    total = total + readings[i];
Line 6, indented 1 level: i = i + 1;6    i = i + 1;
Line 7: }7}

Fill in one row each time a line changes i or total. The table already has the right number of rows. In each row, write only what that line changes; you can leave the other cells empty or copy their values down. Write values the way Java shows them: 3 and 3.0 are different, and text goes in quotes.