#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int main(int argc,char **argv) {
  static unsigned char dat0[4];
  static float dat1[900];
  static float dat2[900];
  static float data[900];
  int i;

  for (i=0;i<900;i++) data[i]=999;
  while (1) {
    fread(dat0,sizeof(unsigned char),4,stdin);if (feof(stdin)) break;
    fread(dat1,sizeof(float),900,stdin);
    fread(dat2,sizeof(float),900,stdin);
    for (i=0;i<900;i++) {
      if ((dat1[i]>-900)&&(data[i]>dat1[i])) data[i]=dat1[i];
    }    
  }
  for (i=0;i<900;i++) printf("%.3f %.1f\n",(452+i)/4096.0*125,data[i]);
  //FreqTable[i]=(452+i)/4096.0*125e6;  // [Hz]
  exit(0);
}