-20 -4
-10 14
0 32
10 50
20 68
30 86
40 104

array(7) { [0]=> array(2) { ["c"]=> int(-20) ["f"]=> int(-4) } [1]=> array(2) { ["c"]=> int(-10) ["f"]=> int(14) } [2]=> array(2) { ["c"]=> int(0) ["f"]=> int(32) } [3]=> array(2) { ["c"]=> int(10) ["f"]=> int(50) } [4]=> array(2) { ["c"]=> int(20) ["f"]=> int(68) } [5]=> array(2) { ["c"]=> int(30) ["f"]=> int(86) } [6]=> array(2) { ["c"]=> int(40) ["f"]=> int(104) } }

Array ( [0] => Array ( [c] => -20 [f] => -4 ) [1] => Array ( [c] => -10 [f] => 14 ) [2] => Array ( [c] => 0 [f] => 32 ) [3] => Array ( [c] => 10 [f] => 50 ) [4] => Array ( [c] => 20 [f] => 68 ) [5] => Array ( [c] => 30 [f] => 86 ) [6] => Array ( [c] => 40 [f] => 104 ) )