In order to display both (multiple) data layers one should:
From menu View choose Layers
A layers' submenu opens:
1 Layer,
2 Layer
In case of multiple datalogger's time regulations more than two data layers are created. LOGGER program enables viewing up to 4 layers. In this case, in order to avoid ambiguity, data displaying is cut down on the closiest change of layers' number. The method of displaying data layers is shown on fig. 12.1 and 12.2