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Monthly and yearly analysis are same as daily analysis because monthly analysis use results generated by daily analysis and yearly analysis use the results generated by monthly analysis. In addition to it we also add some more analysis intervals in pingtable.pl like last365days and allyearly which are present at pingtable.pl version of SLAC but not present at pingtable.pl version of SEECS.
Basically monthly tick shows monthly data of one year in pingtable.pl and allmonthly tick shows analysis data of all months which are present data table.