The next step in conducting a bioclimatic analysis comes with the plotting of climatic data of 12 months for the place, (in this case, Tucson).

As we know the psychrometric chart can represent a multitude of climatic data. While we might have more than 4 parameters available (like DBT, WBT, RH, AH etc), it is necessary only to have any two. We will use DBT and RH since these climatic variables are the ones one is most likely to come across. Ideally, we would like to have hourly average values per month though one can also get by with using the average monthly minimum and maximum.

We will get the requisite values for Tucson from the climatic data from the previous page and lay them out in the table below. Note that all DBT values have been converted from °F to °C in order to comply with the International standards.

Summary of Temperature and R.H. data by hours for Tucson
Months	Hours ->	0:0	3:0	6:0	9:0	12:0	15:0	18:0	21:0
JAN	DBT(°C) % RH	7.2 66.3	5.5 64.2	4.4 69.8	3.3 76.1	12.7 41.8	17.7 34.0	17.7 31.0	12.2 51.0
FEB	DBT(°C) % RH	3.8 26.4	-2.2 40.1	-4.4 43.8	-0.5 35.9	8.8 17.8	12.2 13.2	12.2 17.6	7.2 18.2
MAR	DBT(°C) % RH	1.6 28.5	1.1 24.9	1.6 26.7	3.8 26.5	8.8 12.8	12.2 13.3	12.2 9.0	7.7 20.0
APR	DBT(°C) % RH	8.3 93.3	15.5 25.8	12.7 28.1	14.4 54.0	21.1 26.0	20 30.7	11.1 70.6	8.8 93.4
MAY	DBT(°C) % RH	22.2 16.1	16.6 28.1	14.4 31.7	22.2 21.9	27.7 11.4	30.5 9.8	31.6 9.7	27.2 12.6
JUN	DBT(°C) % RH	31.6 23.9	24.4 20.2	21.1 22.9	27.7 18.2	36.6 15.0	38.8 11.4	38.8 11.4	35.5 15.3
JUL	DBT(°C) % RH	27.7 63.0	25.5 72.1	25.5 72.1	26.1 68.8	29.4 55.3	33.8 37.7	35 34.3	30.0 52.3
AUG	DBT(°C) % RH	27.2 59.3	23.3 74.1	22.2 78.2	25.5 68.4	29.4 46.6	32.7 36.5	34.4 31.5	30.5 44.4
SEP	DBT(°C) % RH	25 32.2	22.7 41.6	21.1 46.3	23.3 45.6	30.5 31.6	33.8 13.0	33.8 9.4	26.6 16.3
OCT	DBT(°C) % RH	14.4 59.0	10.5 81.7	10.5 81.7	14.4 58.6	25.0 26.5	27.2 19.6	26.6 26.0	21.6 37.0
NOV	DBT(°C) % RH	12.2 72.8	12.7 56.5	15.5 56.5	10.5 64.3	20.5 34.9	25.5 25.0	22.7 32.0	16.1 52.0
DEC	DBT(°C) % RH	12.2 40.8	6.6 52.7	6.1 58.3	7.2 47.5	16.6 39.8	18.8 25.1	18.3 27.5	14.4 35.9

Visual Inspection:

1. Since temperatures at night are lower that those during the day, we may safely conclude that in general, the leftmost point for any month represents the coolest time of night and the rightmost, the warmest.
2. Months plotting on the left of the comfort zone indicate cooler temperatures. This means that these months will repond to heating strategies. Months plotting on the right of the comfort zone will respond to cooling strategies.
3. The closer a month plots to the saturation line, the higher the relative humidity. Be careful while doing this comparison since 'closer' means in relation to the total vertical distance between the saturation line and the baseline.
4. From the above, we can interpolate that the months plotting to the left of the comfort zone and closer to the saturation line mean cooler temperatures with high relative humidity. The opposite holds true for months that plot to the right of the comfort zone and closer to the baseline.