Monthly median values at the tropopause for: 
temp. (deg C), potential temp. (deg.K), press. (hPa), alt. (km) and ozone (ppb)
and the number of soundings per month
-78.0 -78.5 -80.0 -80.0 -78.0 -77.0 -76.0 -75.0 -76.0 -77.5 -78.5 -80.0
374.90 377.20 374.80 373.20 376.80 374.20 371.90 375.80 372.50 376.80 372.95 373.20
100.0  96.7 100.0  98.0 100.0 104.5 110.0 103.0 111.0 100.0 100.5  96.7
16.50 16.71 16.55 16.68 16.64 16.28 16.00 16.33 15.99 16.55 16.54 16.73
124.48 110.89 112.07 107.84  92.41 110.08 121.50 128.21 121.77 119.41 135.65 135.59
23 18 19 23 16 14 29 23 32 30 26 19