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Table 1 Descriptive statistics (min: minimum, max: maximum; avg: average, SD: standard deviation; n: number of observations) of monitored environmental parameters and FIO concentrations in rivers Rhine and Moselle during sampling periods 1 (October 2010–October 2011) and 2 (January 2016–January 2017)

From: Prediction of fecal indicator organism concentrations in rivers: the shifting role of environmental factors under varying flow conditions

  Unit Rhine Moselle
Min Max Avg SD n Min Max Avg SD n
Sampling campaign 1 (2010/11)
E. coli MPN/100 mL < 15 12,690 811 2319 51 8 9826 928 2010 52
Enterococci CFU/100 mL 2 1840 128 292 50 2 2450 276 578 50
Coliphages PFU/100 mL 20 2380 537 581 52 10 5440 708 1044 48
Water temp °C 4.2 24.6 14.6 6.5 366 1.7 23.4 13.3 6.9 366
O2 mg/L 7.1 12.2 9.8 1.6 366 5.6 17.2 10.9 2.7 366
pH 7.85 8.56 8.13 0.16 357 7.67 8.85 8.08 0.29 366
Turbidity TE/F 5.0 214.1 16.0 23.4 366 2.1 287.2 18.3 33.9 350
Conductivity µS/cm 337 578 474 56 366 350 1381 987 171 366
Chl a µg/L 1.5 62.5 12.6 17.2 49 0.5 93.5 18.9 25.6 50
Discharge m3/s 744 5500 1502 813 366 18 2560 256 386 366
Solar irradiancea Wh/m2 542 46,153 17,090 12,127 366 542 46,153 17,090 12,127 366
Solar irradiancea (3d-sum) Wh/m2 2871 130,352 51,188 33,646 366 2871 130,352 51,188 33,646 366
Rainfalla mm 0.0 163.0 8.5 19.0 366 0.0 163.0 8.5 19.0 366
Rainfalla (5d-sum) mm 0.0 294.5 42.4 51.9 366 0.0 294.5 42.4 51.9 366
Sampling campaign 2 (2016/17)
E. coli MPN/100 mL 15 10,690 941 2057 54 8 5712 782 1573 53
Enterococci CFU/100 mL 4 2772 231 575 54 5 2407 285 578 53
Coliphages PFU/100 mL 30 4414 606 762 53 10 5080 1004 1116 52
Water temp °C 2.2 24.5 13.0 6.4 345 0.0 24.1 12.8 7.1 348
O2 mg/L 7.3 13.2 9.8 1.6 372 6.4 13.3 9.8 1.7 347
pH 7.67 8.27 7.96 0.12 369 7.72 8.11 7.94 0.08 348
Turbidity TE/F 3.1 336.6 13.6 21.2 372 0.8 200.6 18.0 28.4 351
Conductivity µS/cm 349 635 439 63 372 370 1297 870 218 352
Chl a µg/L 0.3 26.6 3.0 3.8 50 0.2 10.4 2.0 2.2 48
Discharge m3/s 653 3970 1701 810 372 44 1740 320 334 372
Solar irradiancea Wh/m2 1069 44,382 15,858 11,562 372 1069 44,382 15,858 11,562 372
Solar irradiancea (3d-sum) Wh/m2 4333 123,250 47,630 31,647 372 4333 123,250 47,630 31,647 372
Rainfalla mm 0.0 220.6 10.3 22.3 372 0.0 220.6 10.3 22.3 372
Rainfalla (5d-sum) mm 0.0 427.5 51.7 65.0 372 0.0 427.5 51.7 65.0 372
   Pegel Kaub (Rhine) Pegel Cochem (Moselle)
MHQ m3/s 4280b 2010c
MQ m3/s 1650b 313c
MNQ m3/s 780b 60.1c
  1. aSum of weather stations Valwig, Winningen, Mayen, Mülheim-Kärlich, Bingen-Gaulsheim and Bacharach
  2. bReference period: 1930–2015 (web-based information platform Undine; refer to http://www.undine.bafg.de)
  3. cReference period: 1900–2015 (web-based information platform Undine; refer to http://www.undine.bafg.de)