The status of the transition from GTS to WIS2 for surface land stations is shown by default when “GTS-to-WIS2” is selected within the “Transition monitoring” module or report type is set to “SYNOP”. The status of the transition from GTS to WIS2 for upper-air land stations is shown when the report type is set to “TEMP” under the “GTS-to-WIS2” component within the Transition Monitoring module. The maps will display the daily status for each reporting station (surface or upper air) for the selected report type category (SYNOP or TEMP, respectively). Those maps show the differences in reporting status by marking the stations whose reports were only found on WIS2 (green dot), only on GTS (maron red maroon dot), or on both WIS2 and GTS (blue dot). Clicking on the station dot shows a pop-up window with detailed information about the total number of reports available on GTS and WIS2 and with the specification of the encoding format (TAC or BUFR). This pop-up contains a link to a chart with the station status over time (“Time series”). Clicking on the link will display a time series with the total number of daily reports available on GTS and WIS2 over a month.