Array length even number addition

I want to superimpose two numbers on the array

const recomArr = [{ mycount: 12, myhour: 0 },
{ mycount: 5, myhour: 1 },
{ mycount: 3, myhour: 2 },
{ mycount: 3, myhour: 3 },
{ mycount: 3, myhour: 4 },
{ mycount: 1, myhour: 5 },
{ mycount: 3, myhour: 6 },
{ mycount: 0, myhour: 7 },
{ mycount: 2, myhour: 8 },
{ mycount: 2, myhour: 9 },
{ mycount: 3, myhour: 10 },
{ mycount: 2, myhour: 11 },
{ mycount: 5, myhour: 12 },
{ mycount: 4, myhour: 13 },
{ mycount: 7, myhour: 14 },
{ mycount: 39, myhour: 15 },
{ mycount: 10, myhour: 16 },
{ mycount: 8, myhour: 17 },
{ mycount: 10, myhour: 18 },
{ mycount: 8, myhour: 19 },
{ mycount: 6, myhour: 20 },
{ mycount: 8, myhour: 21 },
{ mycount: 8, myhour: 22 },
{ mycount: 16, myhour: 23 }]

console.log(recomArr.reduce((t, c) => {
  if (t[0].length > 0 && (t[0].length % 2) === 0) {
    t[1].push(t[0][0] + t[0][1]);
    t[0] = [];
  } else {
    t[0].push(c.mycount)
  }
  return t;
}, [[], []]));

the result is wrong. I can"t figure out what went wrong

Apr.07,2022

console.log(recomArr.reduce((t, c) => {
  t[0].push(c.mycount)
  if (t[0].length > 0 && (t[0].length % 2) === 0) {
    t[1].push(t[0][0] + t[0][1]);
    t[0] = [];
  }
  return t;
}, [[], []]));
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b325b6-2bdee.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b325b6-2bdee.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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