That is supposed to be a Saturated NaCl solution that gives 75% RH, but this time SHT85 shows 77.7%, So it might be not perfect, also some AHT25 sensors got some weird numbers. 

Humidity

H_1B_026.CSV

H_1B_027.CSV

Measurement for time 23:12

Average measurement for time 23:12

HIH7120SHT85AHT10AHT20AHT21AHT25
80.3177.6779.2979.5475.4888.14

Humidity trend


Temperature

T_1B_026.CSV

T_1B_027.CSV

Measurement for time 23:12

Average measurement for time 23:12

HIH7120SHT85AHT10AHT20AHT21AHT25
27.3027.3427.3126.9327.1427.90

Temperature trend