170501 -99.00 -99.00    1.64  0.43
170502 -99.00 -99.00    1.64  0.20
170503 -99.00 -99.00    1.42  0.20
170504 -99.00 -99.00    1.48  0.20
170505 -99.00 -99.00    1.48  0.43  hot jump
170506 -99.00 -99.00    1.58  0.43
170507 -99.00 -99.00    1.50  0.43
Zdr jump cooler
170508 -99.00 -99.00    1.55  0.14
170509 -99.00 -99.00    1.44  0.14
170510 -99.00 -99.00    1.47  0.14
Zdr change cooler - unknown why
170511 -99.00 -99.00    1.45  0.00  Zdr this day shows no bias
170510 -99.00 -99.00    1.47  0.00
170511 -99.00 -99.00    1.45  0.00
170512 -99.00 -99.00    1.57  0.00; fluctuations -0.1 --> +0.1
170513 -99.00 -99.00    1.62  0.00; fluctuations
170514 -99.00 -99.00    1.53  0.00
170515 -99.00 -99.00    1.51  0.00
170516 -99.00 -99.00    1.51  0.00
170517 -99.00 -99.00    1.46  0.00
170518 -99.00 -99.00    1.63  0.00
170519 -99.00 -99.00    1.57  0.21; visual data inspection
170520 -99.00 -99.00    1.67  0.21; BB
170521 -99.00 -99.00    1.67  0.21; no precip
**********************************
Zdr data from 170522 through 170531 not to be used for science due to
fluctuations.  It was discovered later that waveguide purge with N2
was needed to remove moisture.  Zdr fluctuating by more than 0.4 dB.
***********************************
I would suggest just applying 0.00 dB as Zdr cal adjustment
unless noted for OP data only.
Zdr data are not reliable.
*************************************
170522 -99.00 -99.00    1.55  0.00
170523 -99.00 -99.00    1.55  0.00; (-0.29 for OP only - otherwise 0.00)
170524 -99.00 -99.00    1.55  0.00
170525 -99.00 -99.00    1.55  0.00; (-0.09 for OP only; otherwise 0.00)
170526 -99.00 -99.00    1.54  0.00
170527 -99.00 -99.00    1.58  0.00
170528 -99.00 -99.00    1.61  0.00; (-0.23 for OP only - otherwise 0.00)
170529 -99.00 -99.00    1.58  0.00
170530 -99.00 -99.00    1.75  0.00
170531 -99.00 -99.00    1.69  0.00