gnuplot, 67 bytes

Result

AC

Duration

854ms

Code [DL]

se pr"-"
do for[i=1:256:8]{v=ARG1[i:i+6]
pr v%100%11?0+v[5:5]:v%10}

stdin

143 447
594 998
291 851
492 223
762 629
641 161
325 583
592 525
965 925
377 288
395 959
541 664
868 868
544 148
824 647
566 465
716 313
513 313
159 221
521 246
166 224
778 744
566 336
477 779
633 335
288 899
789 997
361 967
433 398
113 163
622 894
661 727

stdout

4
9
8
2
6
1
5
5
9
7
9
6
8
4
6
6
3
3
2
2
6
7
6
7
3
8
9
9
3
1
2
7

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffecbf69440 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x564cdf1aacf8 /* 7 vars */) = 0
11    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
12    execve("/usr/bin/gnuplot", ["/usr/bin/gnuplot", "-c", "/volume/CODE", "143 447\n594 998\n291 851\n492 223\n"...], 0x564ce0c92290 /* 7 vars */) = 0
12    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
10    +++ exited with 0 +++