The 66 light sensors of the OPTMix device were disassembled from the data loggers during a short period in order to carry out a calibration using reference sensors in an open ground. This calibration will update the correction coefficients used to convert the millivolts returned by the sensors into a unit of measurement of solar radiation. These operations (disconnection, calibration and reconnection of sensors) was carried out between 2018-08-03 and 2018-08-24.
