Monthly mean 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
-57.81 -56.84 -56.53 -57.10 -55.32 -53.02 -53.07 -54.05 -53.98 -54.85 -57.62 -56.02
309.26 308.79 311.33 319.41 324.33 327.72 330.71 335.36 329.96 323.82 317.80 310.62
287.17 296.81 288.31 259.53 253.53 254.19 244.95 229.41 243.71 257.64 260.95 292.11
 8.97  8.84  9.12  9.97 10.27 10.37 10.67 11.11 10.60 10.14  9.84  8.95
 98.67  93.93 118.08 145.76 149.06 163.91 169.81 142.40 118.49 101.66  84.92  85.39
47 43 49 49 47 42 41 44 51 39 40 45
0