ARRL Apr 2021 FMT
AVGERR = average error PPM of Tx frequency
 **The average error for K5CM was divided by 3 , instead of 6.
 In other words the reading of his own TX frequencies were not used
 to lower his ppx.
Rankings of those submitting all readings
RANK  CALL          AVGERR ppm
   1: W9INE    :    0.005082
   2: K5CM     :    0.006598
   3: N9CIF    :    0.013085
   4: AD5MT    :    0.014666
   5: WQ8T     :    0.014793
   6: N8OBJ    :    0.014928
   7: N6LKA    :    0.015178
   8: VE3YX    :    0.019200
   9: W4IVF    :    0.021370
  10: N1JEZ    :    0.021827
  11: WD4EGF   :    0.021908
  12: N7WS     :    0.022172
  13: W2TX     :    0.023156
  14: KQ6RS    :    0.023860
  15: AJ5P     :    0.023948
  16: W4TP     :    0.024888
  17: WC0Y     :    0.025757
  18: W7SUA    :    0.027258
  19: N5NHJ    :    0.027272
  20: N9BPL    :    0.027985
  21: AF9A     :    0.028056
  22: W2FD     :    0.029364
  23: W5LAC    :    0.029606
  24: WA7BNM   :    0.031913
  25: KI5EE    :    0.031973
  26: KM6QX    :    0.032952
  27: KF7NP    :    0.034609
  28: K4PPK    :    0.035016
  29: N3CRT    :    0.035560
  30: KE6ZLX   :    0.038543
  31: K3KSB    :    0.039535
  32: AA6LK    :    0.040158
  33: W8DPK    :    0.043481
  34: W9GR     :    0.049628
  35: W4WJ     :    0.054116
  36: KD5MMM   :    0.058329
  37: KM6VHD   :    0.063860
  38: AI6RE    :    0.064810
  39: KE5O     :    0.066396
  40: W5AJ     :    0.067042
  41: KD5HIP   :    0.072623
  42: AB1UY    :    0.087408
  43: K0WM     :    0.089707
  44: AD8Y     :    0.108347
  45: VE3GSO   :    0.179115
  46: W6OQI    :    0.198111
  47: WA9WTK   :    0.871997

Chart by Bill VE2IQ