|month:||jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec|
|year:||2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022|
|type:||4v, an, fc, fg|
|stream:||efho, efhs, efov, enfh, enfo, enwh, esmm, ewhc, ewho, mfam, mfhm, mfwm, mhwm, mmsa, mmsf, mnfc, mnfh, mnth, mofc, mofm, msmm, oper, scda, scwv, seas, sfmm, smma, waef, wamf, wave, wehs, weov, wmfm|
|class:||e2, e4, ei, em, ep, er, mc, od, yt|
MARS request efficiency
Data at this level are stored in one file on tape and are best retrieved with a single MARS request and not iterated through. For more information, please refer to our guidelines to write efficient MARS requests.