Boldrini, Amedeo; Galgani, Luisa; Consumi, Marco; Loiselle, Steven Arthur (2021): CDOM dynamics in the presence of inorganic (silica gel) versus polystyrene plastic particles: a laboratory study - oxygen concentrations [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.932710, In: Boldrini, A et al. (2021): CDOM dynamics in the presence of inorganic (silica gel) versus polystyrene plastic particles: a laboratory study [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.932711
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Published: 2021-06-17 • DOI registered: 2021-07-20
Abstract:
The present dataset relates to a study that explored dissolved organic matter dynamics under three scenarios: a particle-free environment, a particle-enriched system with polystyrene microplastics, and a particle-enriched system with inorganic particles (water insoluble SiO₂). In part 1 of the experiment, natural marine organic matter was obtained by culturing a non-axenic strain of Chaetoceros socialis in 2 L flasks under each of three scenarios (1C = control, 2PS = polystyrene, 3S = silica).
Dissolved oxygen concentration was used as a proxy for bacterial activity. Oxygen was measured in each cuvette of all of the three scenarios 1C, 2PS and 3S with a FireSting Oxygen needle-type optical probe and temperature sensor, PyroScience® (Aachen, Germany), at the beginning of part 2 (day 7, t7).
Related to:
Boldrini, Amedeo; Galgani, Luisa; Consumi, Marco; Loiselle, Steven Arthur (2021): Microplastics Contamination versus Inorganic Particles: Effects on the Dynamics of Marine Dissolved Organic Matter. Environments, 8(3), 21, https://doi.org/10.3390/environments8030021
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Treatment | Treat | Galgani, Luisa | 1C = control, 2PS = polystyrene, 3S = silica | ||
| 2 | Experiment day | Exp day | day | Galgani, Luisa | ||
| 3 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 1 |
| 4 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 2 |
| 5 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 3 |
| 6 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 4 |
| 7 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 5 |
| 8 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 6 |
| 9 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 7 |
| 10 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 8 |
| 11 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 9 |
| 12 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 10 |
| 13 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 11 |
| 14 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 12 |
| 15 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 13 |
| 16 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 14 |
| 17 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 15 |
| 18 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 16 |
| 19 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 17 |
| 20 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 18 |
| 21 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 19 |
| 22 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 20 |
| 23 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 21 |
| 24 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 22 |
| 25 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 23 |
| 26 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 24 |
| 27 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 25 |
| 28 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 26 |
| 29 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 27 |
| 30 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 28 |
| 31 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 29 |
| 32 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 30 |
| 33 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 31 |
| 34 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 32 |
| 35 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 33 |
| 36 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 34 |
| 37 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 35 |
| 38 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 36 |
| 39 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 37 |
| 40 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 38 |
| 41 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 39 |
| 42 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 40 |
| 43 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 41 |
| 44 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 42 |
| 45 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 43 |
| 46 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 44 |
| 47 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 45 |
| 48 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 46 |
| 49 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 47 |
| 50 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 48 |
| 51 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 49 |
| 52 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 50 |
| 53 | Oxygen | O2 | mg/l | Galgani, Luisa | Optical Oxygen Meter (FireSting, PyroScience GmbH, Germany) | Measurement: 51 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
636 data points
Data
| 1 Treat (1C = control, 2PS = polystyre...) | 2 Exp day [day] | 3 O2 [mg/l] (Measurement: 1) | 4 O2 [mg/l] (Measurement: 2) | 5 O2 [mg/l] (Measurement: 3) | 6 O2 [mg/l] (Measurement: 4) | 7 O2 [mg/l] (Measurement: 5) | 8 O2 [mg/l] (Measurement: 6) | 9 O2 [mg/l] (Measurement: 7) | 10 O2 [mg/l] (Measurement: 8) | 11 O2 [mg/l] (Measurement: 9) | 12 O2 [mg/l] (Measurement: 10) | 13 O2 [mg/l] (Measurement: 11) | 14 O2 [mg/l] (Measurement: 12) | 15 O2 [mg/l] (Measurement: 13) | 16 O2 [mg/l] (Measurement: 14) | 17 O2 [mg/l] (Measurement: 15) | 18 O2 [mg/l] (Measurement: 16) | 19 O2 [mg/l] (Measurement: 17) | 20 O2 [mg/l] (Measurement: 18) | 21 O2 [mg/l] (Measurement: 19) | 22 O2 [mg/l] (Measurement: 20) | 23 O2 [mg/l] (Measurement: 21) | 24 O2 [mg/l] (Measurement: 22) | 25 O2 [mg/l] (Measurement: 23) | 26 O2 [mg/l] (Measurement: 24) | 27 O2 [mg/l] (Measurement: 25) | 28 O2 [mg/l] (Measurement: 26) | 29 O2 [mg/l] (Measurement: 27) | 30 O2 [mg/l] (Measurement: 28) | 31 O2 [mg/l] (Measurement: 29) | 32 O2 [mg/l] (Measurement: 30) | 33 O2 [mg/l] (Measurement: 31) | 34 O2 [mg/l] (Measurement: 32) | 35 O2 [mg/l] (Measurement: 33) | 36 O2 [mg/l] (Measurement: 34) | 37 O2 [mg/l] (Measurement: 35) | 38 O2 [mg/l] (Measurement: 36) | 39 O2 [mg/l] (Measurement: 37) | 40 O2 [mg/l] (Measurement: 38) | 41 O2 [mg/l] (Measurement: 39) | 42 O2 [mg/l] (Measurement: 40) | 43 O2 [mg/l] (Measurement: 41) | 44 O2 [mg/l] (Measurement: 42) | 45 O2 [mg/l] (Measurement: 43) | 46 O2 [mg/l] (Measurement: 44) | 47 O2 [mg/l] (Measurement: 45) | 48 O2 [mg/l] (Measurement: 46) | 49 O2 [mg/l] (Measurement: 47) | 50 O2 [mg/l] (Measurement: 48) | 51 O2 [mg/l] (Measurement: 49) | 52 O2 [mg/l] (Measurement: 50) | 53 O2 [mg/l] (Measurement: 51) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1-C1 | 7 | 6.7031 | 6.7124 | 6.7060 | 6.7091 | 6.7020 | 6.7079 | 6.7061 | 6.7039 | 6.7032 | 6.6956 | 6.7043 | 6.7040 | 6.7098 | 6.7078 | 6.7084 | 6.7079 | 6.7045 | 6.7023 | 6.7017 | 6.7033 | 6.7035 | 6.7038 | 6.7034 | 6.7011 | 6.6987 | 6.6958 | 6.6977 | 6.6985 | 6.7008 | 6.7014 | 6.7025 | 6.6998 | 6.6989 | 6.6976 | 6.6965 | 6.6944 | 6.6920 | 6.6952 | 6.6997 | 6.7022 | 6.7015 | 6.6950 | 6.6934 | 6.6893 | 6.6893 | 6.6929 | 6.6942 | 6.6960 | 6.6924 | 6.6926 | 6.6925 |
| 1-C2 | 7 | 6.6811 | 6.6769 | 6.6798 | 6.6802 | 6.6848 | 6.6825 | 6.6826 | 6.6812 | 6.6822 | 6.6780 | 6.6783 | 6.6770 | 6.6759 | 6.6772 | 6.6797 | 6.6807 | 6.6758 | 6.6743 | 6.6735 | 6.6768 | 6.6746 | 6.6746 | 6.6745 | 6.6741 | 6.6737 | 6.6751 | 6.6790 | 6.6794 | 6.6749 | 6.6692 | 6.6677 | 6.6710 | 6.6733 | 6.6775 | 6.6720 | 6.6742 | 6.6693 | 6.6737 | 6.6764 | 6.6739 | 6.6746 | 6.6702 | 6.6750 | 6.6725 | 6.6711 | 6.6690 | 6.6721 | 6.6695 | 6.6704 | 6.6687 | 6.6706 |
| 1-C3 | 7 | 6.5924 | 6.5895 | 6.5882 | 6.5894 | 6.5906 | 6.5871 | 6.5842 | 6.5833 | 6.5864 | 6.5899 | 6.5901 | 6.5901 | 6.5835 | 6.5821 | 6.5810 | 6.5849 | 6.5874 | 6.5864 | 6.5858 | 6.5827 | 6.5818 | 6.5818 | 6.5829 | 6.5826 | 6.5841 | 6.5851 | 6.5839 | 6.5818 | 6.5802 | 6.5829 | 6.5823 | 6.5790 | 6.5750 | 6.5734 | 6.5763 | 6.5789 | 6.5785 | 6.5787 | 6.5762 | 6.5763 | 6.5736 | 6.5743 | 6.5725 | 6.5693 | 6.5683 | 6.5694 | 6.5712 | 6.5685 | 6.5681 | 6.5721 | 6.5754 |
| 1-C4 | 7 | 6.5299 | 6.5292 | 6.5270 | 6.5283 | 6.5312 | 6.5323 | 6.5345 | 6.5303 | 6.5242 | 6.5185 | 6.5196 | 6.5256 | 6.5245 | 6.5245 | 6.5212 | 6.5213 | 6.5235 | 6.5205 | 6.5242 | 6.5202 | 6.5257 | 6.5251 | 6.5279 | 6.5271 | 6.5191 | 6.5181 | 6.5155 | 6.5220 | 6.5179 | 6.5197 | 6.5219 | 6.5244 | 6.5239 | 6.5210 | 6.5211 | 6.5235 | 6.5243 | 6.5255 | 6.5243 | 6.5240 | 6.5237 | 6.5287 | 6.5298 | 6.5289 | 6.5224 | 6.5212 | 6.5205 | 6.5237 | 6.5278 | 6.5280 | 6.5241 |
| 2-PS1 | 7 | 6.6346 | 6.6295 | 6.6223 | 6.6134 | 6.6085 | 6.6076 | 6.6071 | 6.5997 | 6.5886 | 6.5779 | 6.5679 | 6.5611 | 6.5550 | 6.5492 | 6.5417 | 6.5324 | 6.5226 | 6.5172 | 6.5152 | 6.5132 | 6.5078 | 6.5053 | 6.5019 | 6.4999 | 6.4934 | 6.4901 | 6.4892 | 6.4894 | 6.4883 | 6.4842 | 6.4786 | 6.4776 | 6.4770 | 6.4776 | 6.4753 | 6.4710 | 6.4667 | 6.4647 | 6.4636 | 6.4649 | 6.4644 | 6.4630 | 6.4568 | 6.4492 | 6.4462 | 6.4459 | 6.4445 | 6.4450 | 6.4419 | 6.4408 | 6.4354 |
| 2-PS2 | 7 | 6.5075 | 6.5042 | 6.5030 | 6.5017 | 6.5001 | 6.4983 | 6.4952 | 6.4978 | 6.4995 | 6.5020 | 6.4986 | 6.4917 | 6.4912 | 6.4884 | 6.4871 | 6.4830 | 6.4817 | 6.4801 | 6.4797 | 6.4791 | 6.4773 | 6.4730 | 6.4727 | 6.4754 | 6.4752 | 6.4703 | 6.4694 | 6.4665 | 6.4675 | 6.4661 | 6.4647 | 6.4616 | 6.4582 | 6.4579 | 6.4574 | 6.4580 | 6.4594 | 6.4563 | 6.4554 | 6.4509 | 6.4502 | 6.4483 | 6.4487 | 6.4519 | 6.4520 | 6.4519 | 6.4483 | 6.4439 | 6.4420 | 6.4419 | 6.4471 |
| 2-PS3 | 7 | 6.5584 | 6.5570 | 6.5582 | 6.5558 | 6.5539 | 6.5513 | 6.5476 | 6.5491 | 6.5461 | 6.5494 | 6.5495 | 6.5530 | 6.5529 | 6.5522 | 6.5520 | 6.5516 | 6.5485 | 6.5456 | 6.5478 | 6.5500 | 6.5513 | 6.5486 | 6.5501 | 6.5476 | 6.5490 | 6.5469 | 6.5486 | 6.5484 | 6.5477 | 6.5500 | 6.5459 | 6.5468 | 6.5451 | 6.5466 | 6.5437 | 6.5415 | 6.5416 | 6.5445 | 6.5438 | 6.5442 | 6.5415 | 6.5421 | 6.5416 | 6.5435 | 6.5447 | 6.5441 | 6.5439 | 6.5419 | 6.5432 | 6.5429 | 6.5451 |
| 2-PS4 | 7 | 6.5647 | 6.5635 | 6.5647 | 6.5618 | 6.5614 | 6.5599 | 6.5614 | 6.5607 | 6.5596 | 6.5603 | 6.5576 | 6.5588 | 6.5536 | 6.5538 | 6.5504 | 6.5491 | 6.5460 | 6.5463 | 6.5515 | 6.5539 | 6.5530 | 6.5485 | 6.5468 | 6.5439 | 6.5433 | 6.5419 | 6.5455 | 6.5433 | 6.5441 | 6.5380 | 6.5394 | 6.5362 | 6.5387 | 6.5370 | 6.5387 | 6.5390 | 6.5373 | 6.5347 | 6.5334 | 6.5339 | 6.5359 | 6.5337 | 6.5351 | 6.5350 | 6.5385 | 6.5361 | 6.5363 | 6.5346 | 6.5347 | 6.5294 | 6.5283 |
| 3-S1 | 7 | 6.5233 | 6.5227 | 6.5240 | 6.5214 | 6.5182 | 6.5178 | 6.5212 | 6.5234 | 6.5219 | 6.5205 | 6.5168 | 6.5175 | 6.5190 | 6.5217 | 6.5208 | 6.5189 | 6.5170 | 6.5148 | 6.5116 | 6.5100 | 6.5108 | 6.5109 | 6.5096 | 6.5089 | 6.5104 | 6.5133 | 6.5109 | 6.5065 | 6.5061 | 6.5071 | 6.5069 | 6.5035 | 6.5040 | 6.5078 | 6.5092 | 6.5075 | 6.5059 | 6.5077 | 6.5062 | 6.5049 | 6.4990 | 6.4985 | 6.4947 | 6.4942 | 6.4926 | 6.4947 | 6.4974 | 6.4972 | 6.4971 | 6.4937 | 6.4939 |
| 3-S2 | 7 | 6.5246 | 6.5216 | 6.5248 | 6.5241 | 6.5248 | 6.5237 | 6.5245 | 6.5234 | 6.5258 | 6.5279 | 6.5288 | 6.5228 | 6.5186 | 6.5199 | 6.5225 | 6.5222 | 6.5221 | 6.5220 | 6.5243 | 6.5219 | 6.5241 | 6.5219 | 6.5193 | 6.5154 | 6.5142 | 6.5179 | 6.5191 | 6.5195 | 6.5201 | 6.5171 | 6.5151 | 6.5105 | 6.5133 | 6.5175 | 6.5188 | 6.5190 | 6.5143 | 6.5130 | 6.5131 | 6.5161 | 6.5173 | 6.5142 | 6.5121 | 6.5125 | 6.5138 | 6.5147 | 6.5141 | 6.5142 | 6.5123 | 6.5128 | 6.5118 |
| 3-S3 | 7 | 6.5035 | 6.5043 | 6.5023 | 6.5005 | 6.4985 | 6.5002 | 6.5014 | 6.5028 | 6.5049 | 6.5048 | 6.5052 | 6.5042 | 6.4980 | 6.4999 | 6.5017 | 6.5045 | 6.5001 | 6.4987 | 6.5008 | 6.4996 | 6.4985 | 6.4993 | 6.5023 | 6.5025 | 6.5024 | 6.5008 | 6.5000 | 6.4988 | 6.5009 | 6.5054 | 6.5044 | 6.5063 | 6.5002 | 6.5018 | 6.4981 | 6.5021 | 6.5013 | 6.5012 | 6.4995 | 6.4989 | 6.5002 | 6.4985 | 6.4998 | 6.4973 | 6.4995 | 6.4998 | 6.5015 | 6.4972 | 6.4953 | 6.4951 | 6.4997 |
| 3-S4 | 7 | 6.5249 | 6.5222 | 6.5221 | 6.5214 | 6.5238 | 6.5211 | 6.5218 | 6.5200 | 6.5214 | 6.5209 | 6.5188 | 6.5175 | 6.5130 | 6.5136 | 6.5123 | 6.5147 | 6.5132 | 6.5163 | 6.5123 | 6.5138 | 6.5099 | 6.5118 | 6.5115 | 6.5107 | 6.5094 | 6.5042 | 6.5064 | 6.5060 | 6.5097 | 6.5080 | 6.5081 | 6.5050 | 6.5051 | 6.5027 | 6.5010 | 6.4942 | 6.4950 | 6.4929 | 6.4966 | 6.4922 | 6.4918 | 6.4872 | 6.4860 | 6.4853 | 6.4841 | 6.4837 | 6.4823 | 6.4805 | 6.4821 | 6.4818 | 6.4829 |