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. 2019 Jan 5;24:5. doi: 10.1186/s12199-018-0760-x

Table 1.

Descriptive statistics on the daily number of PTBs, temperature, relative humidity, wind, daily rain and dust code (2011–2017)

Variable All PTBs Temperature Relative humidity Average wind (mean ± SD) Average rain (mean ± SD) Average dust code (mean ± SD)
Total number Daily average ± SD Average maximum temperature
(mean ± SD)
Average minimum temperature
(mean ± SD)
Average temperature (mean ± SD) Average maximum RH (mean ± SD) Average minimum RH (mean ± SD) Average (mean ± SD)
Year
 2011 415 2.23 ± 1.81 28.24 ± 10.73 15.06 ± 9.01 28.24 ± 10.73 50.11 ± 24.58 19.35 ± 17.55 34.73 ± 20.14 8.13 ± 2.42 0.68 ± 2.84 0.68 ± 0.93
 2012 513 1.95 ± 1.19 24.08 ± 11.29 11.44 ± 9.49 24.09 ± 11.29 55.00 ± 25.31 23.92 ± 17.53 39.46 ± 20.73 7.54 ± 2.51 0.54 ± 2.47 0.85 ± 0.92
 2013 488 2.08 ± 1.18 25.77 ± 10.64 12.44 ± 9.42 25.77 ± 10.64 52.82 ± 23.10 20.20 ± 14.04 36.51 ± 17.72 8.03 ± 2.58 0.27 ± 1.75 0.69 ± 0.94
 2014 448 2.03 ± 1.21 25.01 ± 11.45 12.04 ± 9.64 25.01 ± 11.45 53.16 ± 26.11 21.07 ± 16.15 37.12 ± 20.06 11.83 ± 3.79 0.44 ± 1.84 0.66 ± 0.97
 2015 503 2.02 ± 1.03 25.59 ± 10.82 12.71 ± 9.10 25.59 ± 10.82 52.99 ± 23.83 22.34 ± 15.53 37.66 ± 19.05 11.85 ± 3.44 0.33 ± 1.42 1.13 ± 1.06
 2016 518 2.21 ± 1.23 26.02 ± 10.26 12.68 ± 8.95 26.02 ± 10.26 53.53 ± 22.29 18.62 ± 12.15 36.08 ± 16.36 11.73 ± 3.52 0.37 ± 1.69 1.88 ± 1.03
 2017 255 3.07 ± 1.55 22.73 ± 10.86 10.03 ± 9.15 22.73 ± 10.86 62.23 ± 21.93 22.82 ± 17.40 41.35 ± 19.53 11.72 ± 3.66 0.75 ± 2.81 2.56 ± 0.90
Month
 January 286 2.27 ± 1.42 11.42 ± 4.32 0.41 ± 3.37 5.92 ± 3.54 75.06 ± 15.28 34.35 ± 13.48 54.71 ± 13.24 7.78 ± 2.94 0.50 ± 1.72 1.15 ± 1.09
 February 267 2.18 ± 1.28 13.11 ± 5.72 1.87 ± 4.57 7.49 ± 4.82 71.56 ± 16.46 33.71 ± 16.54 52.63 ± 15.63 9.02 ± 3.36 0.97 ± 3.18 1.30 ± 1.26
 March 263 2.07 ± 1.04 18.64 ± 5.16 6.47 ± 4.41 12.55 ± 4.45 70.23 ± 16.58 28.40 ± 13.41 49.31 ± 13.16 10.68 ± 3.93 0.75 ± 2.62 0.93 ± 0.99
 April 257 1.98 ± 1.13 26.19 ± 4.96 12.01 ± 3.89 19.09 ± 4.18 60.50 ± 19.49 19.11 ± 11.84 39.66 ± 14.65 11.27 ± 4.06 0.61 ± 2.15 0.87 ± 1.12
 May 216 1.86 ± 1.13 32.69 ± 3.62 18.26 ± 3.10 25.47 ± 3.15 50.18 ± 19.07 13.76 ± 7.97 31.43 ± 12.83 11.65 ± 3.94 0.61 ± 2.52 1.29 ± 1.16
 June 394 2.57 ± 1.24 37.24 ± 3.02 22.94 ± 2.85 30.08 ± 2.69 33.22 ± 14.06 9.35 ± 5.44 21.02 ± 9.10 11.94 ± 3.52 0.21 ± 1.75 1.67 ± 1.27
 July 369 2.72 ± 1.41 38.67 ± 2.56 24.97 ± 2.40 31.82 ± 2.25 27.79 ± 10.20 9.12 ± 3.95 18.45 ± 6.56 11.54 ± 3.25 0.04 ± 0.51 1.81 ± 1.07
 August 311 2.51 ± 1.95 37.03 ± 2.73 22.34 ± 2.60 29.69 ± 2.44 27.23 ± 10.35 9.16 ± 4.96 18.20 ± 7.22 10.77 ± 2.96 0.02 ± 0.29 1.35 ± 1.02
 September 208 1.67 ± 0.73 33.80 ± 3.20 19.09 ± 2.65 26.45 ± 2.70 34.95 ± 13.46 10.69 ± 5.48 22.82 ± 8.92 9.79 ± 2.80 0.08 ± 1.02 0.83 ± 0.96
 October 180 1.27 ± 0.51 26.19 ± 4.88 12.42 ± 3.84 19.30 ± 4.17 49.52 ± 17.84 18.32 ± 10.97 33.92 ± 13.56 9.47 ± 3.15 0.21 ± 1.14 0.48 ± 0.79
 November 176 1.80 ± 1.00 16.18 ± 5.27 5.28 ± 3.83 10.73 ± 4.22 70.88 ± 18.32 33.88 ± 18.03 52.38 ± 17.13 8.38 ± 3.50 0.90 ± 3.05 0.62 ± 0.98
 December 213 1.96 ± 1.37 11.48 ± 4.18 0.90 ± 3.54 6.19 ± 3.56 75.62 ± 16.66 36.75 ± 16.56 56.18 ± 15.57 7.59 ± 2.93 0.56 ± 2.47 0.99 ± 1.07
Day of week
 Sunday 437 2.08 ± 1.23 25.23 ± 11.19 12.35 ± 9.39 18.79 ± 10.18 53.92 ± 24.54 21.52 ± 16.16 37.63 ± 19.62 10.05 ± 3.64 0.45 ± 1.84 1.12 ± 1.18
 Monday 434 2.16 ± 1.39 25.42 ± 11.14 12.31 ± 9.47 18.87 ± 10.21 53.22 ± 24.52 20.52 ± 15.66 36.79 ± 19.07 10.04 ± 3.90 0.43 ± 2.00 1.16 ± 1.31
 Tuesday 449 2.09 ± 1.08 25.48 ± 11.08 12.31 ± 9.38 18.90 ± 10.12 52.99 ± 24.12 21.07 ± 16.19 36.93 ± 19.35 10.02 ± 3.64 0.39 ± 1.91 1.12 ± 1.10
 Wednesday 485 2.29 ± 1.35 25.67 ± 10.95 12.55 ± 9.38 19.10 ± 10.06 54.48 ± 24.80 21.20 ± 16.06 37.72 ± 19.57 10.12 ± 3.92 0.79 ± 3.17 1.11 ± 1.12
 Thursday 447 2.08 ± 1.07 25.54 ± 10.66 12.56 ± 9.24 19.06 ± 9.87 54.58 ± 24.63 21.08 ± 14.98 37.72 ± 18.94 10.07 ± 3.84 0.34 ± 1.75 1.09 ± 1.14
 Friday 413 1.90 ± 0.90 25.52 ± 10.86 12.50 ± 9.23 19.01 ± 9.94 53.88 ± 23.68 21.30 ± 16.00 37.53 ± 19.01 10.15 ± 3.66 0.42 ± 2.07 0.99 ± 1.13
 Saturday 475 2.47 ± 1.94 25.41 ± 10.86 12.53 ± 9.39 18.96 ± 10.00 53.05 ± 23.14 21.13 ± 15.39 37.03 ± 18.45 9.91 ± 3.36 0.36 ± 1.51 1.18 ± 1.16
Holiday
 Yes 631 1.96 ± 0.89 25.10 ± 10.76 12.14 ± 9.17 18.62 ± 9.85 54.96 ± 24.04 21.37 ± 15.95 38.11 ± 19.05 10.18 ± 3.72 0.48 ± 2.04 1.00 ± 1.11
 No 2509 2.21 ± 1.42 25.57 ± 11.00 12.52 ± 9.39 19.04 ± 10.09 53.40 ± 24.22 21.05 ± 15.72 37.13 ± 19.15 10.02 ± 3.71 0.45 ± 2.11 1.14 ± 1.14