Here is temp. and humidity from five radom sampled motes (different ID) temp sensor is DS18B20, humidity sensor is Hih6130. Just one reading. A bit unscientific but to give some idea about variance: 28f90edd03000020 18.25 RH=42.4 T_RH=17.8 282f74d2020000b7 18.63 RH=42.1 T_RH=19.0 28dae3dc03000076 18.50 RH=39.1 T_RH=18.1 28bfcddc03000004 18.50 RH=42.4 T_RH=18.7 28bb24ce02000065 18.69 RH=42.8 T_RH=19.1