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Table 2 Absolute volumes of all sinus compartments, rostral and caudal system (N = 12)

From: Volumetric measurements of paranasal sinuses and examination of sinonasal communication in healthy Shetland ponies: anatomical and morphometric characteristics using computed tomography

   Mean SD Min Max Median Q25 Q75 IQR
Total (mL) total 459.66 33.77 275.26 822.62 438.43 348.94 482.75 133.81
left 230.13 34.52 124.78 417.78 219.82 173.47 244.81 71.34
right 229.52 33.21 145.16 404.84 209.21 177.13 238.18 61.05
Rostral System (mL) total 85.73 13.79 45.56 171.55 79.05 63.17 87.8 24.63
left 41.94 14.79 16.46 98.11 35.78 29.41 47.73 18.32
right 43.79 13.03 25.07 83.89 38.38 34.07 44.4 10.33
Caudal system (mL) total 373.92 38.11 266.61 651.07 359.13 276.38 401.33 124.95
left 188.19 38.87 108.33 319.67 175.58 133.66 214.78 81.3
right 185.73 37.65 118.29 331.4 173.56 136.94 199.21 62.27
  1. Total number of sinus compartments, rostral and caudal systems, also divided into left and right side in Shetland ponies (n=12); SD: standard deviation, Min: minimum, Max: maximum, Q25: 25th percentile, Q75: percentile, IQR: interquartile range, mL: millilitre