Citation:

PANGAEA.924295

Name: Seawater carbonate chemistry and Microalgal photophysiology and macronutrient distribution in summer sea ice in the Amundsen and Ross Seas, Antarctica
Published: 2018
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Antarctic; Biomass/Abundance/Elemental composition; Coast and continental shelf; Entire community; Field observation; Pelagos; Polar; Primary production/Photosynthesis

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Abstract:

Our study addresses how environmental variables, such as macronutrients concentrations, snow cover, carbonate chemistry and salinity affect the photophysiology and biomass of Antarctic sea-ice algae. We have measured vertical profiles of inorganic macronutrients (phosphate, nitrite + nitrate and silicic acid) in summer sea ice and photophysiology of ice algal assemblages in the poorly studied Amundsen and Ross Seas sectors of the Southern Ocean. Brine-scaled bacterial abundance, chl a and macronutrient concentrations were often high in the ice and positively correlated with each other. Analysis of photosystem II rapid light curves showed that microalgal cells in samples with high phosphate and nitrite + nitrate concentrations had reduced maximum relative electron transport rate and photosynthetic efficiency. We also observed strong couplings of PSII parameters to snow depth, ice thickness and brine salinity, which highlights a wide range of photoacclimation in Antarctic pack-ice algae. It is likely that the pack ice was in a post-bloom situation during the late sea-ice season, with low photosynthetic efficiency and a high degree of nutrient accumulation occurring in the ice. In order to predict how key biogeochemical processes are affected by future changes in sea ice cover, such as in situ photosynthesis and nutrient cycling, we need to understand how physicochemical properties of sea ice affect the microbial community. Our results support existing hypothesis about sea-ice algal photophysiology, and provide additional observations on high nutrient concentrations in sea ice that could influence the planktonic communities as the ice is retreating.

Keyword(s):

Antarctic; Biomass/Abundance/Elemental composition; Coast and continental shelf; Entire community; Field observation; Pelagos; Polar; Primary production/Photosynthesis

Supplement to:

Torstensson, Anders; Fransson, Agneta; Currie, Kim I; Wulff, Angela; Chierici, Melissa (2018): Microalgal photophysiology and macronutrient distribution in summer sea ice in the Amundsen and Ross Seas, Antarctica. PLoS ONE, 13(4), e0195587, https://doi.org/10.1371/journal.pone.0195587

Original version:

Torstensson, Anders (2017): OSO Photophysiology. figshare, https://doi.org/10.6084/m9.figshare.5310982

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James C; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2019): seacarb: seawater carbonate chemistry with R. R package version 3.2.12. https://CRAN.R-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Median Latitude: -72.941362 * Median Longitude: 129.290681 * South-bound Latitude: -77.350000 * West-bound Longitude: 103.000000 * North-bound Latitude: -69.280000 * East-bound Longitude: 165.400000

Minimum DEPTH, ice/snow: 0.00 m * Maximum DEPTH, ice/snow: 0.55 m

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2020-10-30.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Torstensson, Anders		study
2	Identification	ID		Torstensson, Anders
3	Station label	Station		Torstensson, Anders
4	LATITUDE	Latitude		Torstensson, Anders		Geocode
5	LONGITUDE	Longitude		Torstensson, Anders		Geocode
6	Section	Sect		Torstensson, Anders
7	Core	Core		Torstensson, Anders
8	DEPTH, ice/snow	Depth ice/snow	m	Torstensson, Anders		Geocode – snow
9	Irradiance	E	µmol/m²/s	Torstensson, Anders		Surface
10	Salinity	Sal		Torstensson, Anders		bulk
11	Temperature, water	Temp	°C	Torstensson, Anders
12	Ice thickness	Ice thick	m	Torstensson, Anders
13	Salinity	Sal		Torstensson, Anders		Brine
14	Fucoxanthin	Fuco	µg/l	Torstensson, Anders
15	Chlorophyll a	Chl a	µg/l	Torstensson, Anders
16	Bacteria	Bact	#/ml	Torstensson, Anders
17	Maximum photochemical quantum yield of photosystem II	Fv/Fm		Torstensson, Anders
18	Light saturation	Ek	µmol/m²/s	Torstensson, Anders
19	Electron transport rate efficiency	alpha		Torstensson, Anders
20	Maximal electron transport rate, relative	rETR max		Torstensson, Anders
21	Non photochemical quenching	NPQ		Torstensson, Anders
22	pH	pH		Torstensson, Anders		total scale
23	Carbon, inorganic, dissolved	DIC	µmol/kg	Torstensson, Anders
24	Nitrate and Nitrite	[NO3]- + [NO2]-	µmol/kg	Torstensson, Anders
25	Silicate	Si(OH)4	µmol/kg	Torstensson, Anders
26	Phosphate	[PO4]3-	µmol/kg	Torstensson, Anders
27	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
28	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
29	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
30	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
31	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
32	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
33	Alkalinity, total	AT	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
34	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
35	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

3286 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Type (study)	2 ID	3 Station	4 Latitude	5 Longitude	6 Sect	7 Core	8 Depth ice/snow [m] (snow)	9 E [µmol/m²/s] (Surface)	10 Sal (bulk)	11 Temp [°C]	12 Ice thick [m]	13 Sal (Brine)	14 Fuco [µg/l]	15 Chl a [µg/l]	16 Bact [#/ml]	17 Fv/Fm	18 Ek [µmol/m²/s]	19 alpha	20 rETR max	21 NPQ	22 pH (total scale)	23 DIC [µmol/kg]	24 [NO3]- + [NO2]- [µmol/kg]	25 Si(OH)4 [µmol/kg]	26 [PO4]3- [µmol/kg]	27 CSC flag	28 CO2 [µmol/kg]	29 fCO2water_SST_wet [µatm]	30 pCO2water_SST_wet [µatm]	31 [HCO3]- [µmol/kg]	32 [CO3]2- [µmol/kg]	33 AT [µmol/kg]	34 Omega Arg	35 Omega Cal
field	1	2	-69.28	103.0	1	1	0.20	960.0000000	7.4	-1.350	0.05	25.949									8.159	1574.150	7.484	25.845	2.690	9	21.80	278.34	279.60	1515.44	36.90	1600.19	0.54	1.00
field	2	2	-69.28	103.0	1	2	0.20	960.0000000	6.7	-1.400	0.15	26.873	8
field	3	2	-69.28	103.0	2	2	0.20	960.0000000	6.4	-1.200	0.25	23.177	3
field	4	2	-69.28	103.0	3	2	0.20	960.0000000	6.1	-1.100	0.35	21.329	2
field	5	2	-69.28	103.0	4	2	0.20	960.0000000	5.5	-1.100	0.45	21.329	2
field	6	2	-69.28	103.0	5	2	0.20	960.0000000	4.1	-1.300	0.55	25.025	11
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field	8	2	-69.28	103.0	7	2	0.20	960.0000000	4.4	-1.400	0.75	26.873	20
field	9	2	-69.28	103.0	8	2	0.20	960.0000000	3.4	-1.400	0.85	26.873	22
field	10	3	-70.01	106.6	1	3	0.30	937.0000000	2.4	-1.600	0.05	30.569	17
field	11	3	-70.01	106.6	2	3	0.30	937.0000000	2.8	-1.550	0.15	29.645	7
field	12	3	-70.01	106.6	3	3	0.30	937.0000000	2.5	-1.600	0.25	30.569	10
field	13	3	-70.01	106.6	4	3	0.30	937.0000000	4.0	-1.550	0.35	29.645	23
field	14	3	-70.01	106.6	5	3	0.30	937.0000000	5.4	-1.550	0.45	29.645	18
field	15	3	-70.01	106.6	6	3	0.30	937.0000000	6.3	-1.400	0.55	26.873	9
field	16	3	-70.01	106.6	7	3	0.30	937.0000000	7.1	-1.500	0.65	28.721	7
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field	18	6	-72.46	114.1	9	1	0.32	1055.0000000	4.8	-1.100	0.15	21.329	0
field	19	6	-72.46	114.1	8	1	0.32	1055.0000000	3.3	-0.650	0.25	13.013	0
field	20	6	-72.46	114.1	7	1	0.32	1055.0000000	3.0	-1.250	0.35	24.101	4
field	21	6	-72.46	114.1	6	1	0.32	1055.0000000	2.4	-1.100	0.45	21.329	4
field	22	6	-72.46	114.1	5	1	0.32	1055.0000000	4.4	-0.900	0.55	17.633	1
field	23	6	-72.46	114.1	4	1	0.32	1055.0000000	3.7	-0.750	0.65	14.861				0.321	35.489	0.330	11.709	0.718	6.913	406.874	2.982	9.359	0.779	9	86.80	1110.29	1115.25	319.68	0.39	321.01	0.01	0.01
field	24	6	-72.46	114.1	3	1	0.32	1055.0000000	3.4	-1.250	0.75	24.101	3
field	25	6	-72.46	114.1	2	1	0.32	1055.0000000	4.7	-1.300	0.85	25.025	2
field	26	6	-72.46	114.1	1	1	0.32	1055.0000000	6.0	-1.100	0.95	21.329	119
field	27	6	-72.46	114.1	10	2	0.32	1055.0000000	4.4	-1.200	0.05	23.177	4
field	28	6	-72.46	114.1	9	2	0.32	1055.0000000	4.8	-1.100	0.15	21.329				0.321	81.860	0.399	32.635	0.312	8.355	359.286	2.417	36.572	2.433	9	3.33	42.25	42.43	343.93	12.03	378.21	0.17	0.32
field	29	6	-72.46	114.1	8	2	0.32	1055.0000000	3.3	-0.650	0.25	13.013	0
field	30	6	-72.46	114.1	7	2	0.32	1055.0000000	3.0	-1.250	0.35	24.101	18
field	31	6	-72.46	114.1	6	2	0.32	1055.0000000	2.4	-1.100	0.45	21.329	5
field	32	6	-72.46	114.1	5	2	0.32	1055.0000000	4.4	-0.900	0.55	17.633	1
field	33	6	-72.46	114.1	4	2	0.32	1055.0000000	3.7	-0.750	0.65	14.861	4
field	34	6	-72.46	114.1	3	2	0.32	1055.0000000	3.4	-1.250	0.75	24.101	1
field	35	6	-72.46	114.1	2	2	0.32	1055.0000000	4.7	-1.300	0.85	25.025	1
field	36	6	-72.46	114.1	1	2	0.32	1055.0000000	6.0	-1.100	0.95	21.329	175
field	37	7	-72.57	116.6	25	1	0.43	785.9571429			0.05					0.226	79.425	0.329	26.153	0.200
field	38	7	-72.57	116.6	24	1	0.43	785.9571429			0.15					0.280	101.985	0.364	37.072	0.322
field	39	7	-72.57	116.6	23	1	0.43	785.9571429	7.8	-1.700	0.25	32.417	27
field	40	7	-72.57	116.6	22	1	0.43	785.9571429	7.3	-1.700	0.35	32.417	61
field	41	7	-72.57	116.6	21	1	0.43	785.9571429	5.6	-1.600	0.45	30.569	34
field	42	7	-72.57	116.6	20	1	0.43	785.9571429	5.4	-1.700	0.55	32.417				0.261	46.400	0.190	8.813	0.687	8.929	1350.115	26.099	60.448	1.866	9	3.09	38.41	38.58	1191.23	155.80	1531.86	2.26	4.19
field	43	7	-72.57	116.6	19	1	0.43	785.9571429	4.5	-1.600	0.65	30.569	68
field	44	7	-72.57	116.6	18	1	0.43	785.9571429	3.9	-1.400	0.75	26.873	40
field	45	7	-72.57	116.6	17	1	0.43	785.9571429	3.1	-1.600	0.85	30.569	76
field	46	7	-72.57	116.6	16	1	0.43	785.9571429			0.95					0.308	12.808	0.232	2.972	1.172
field	47	7	-72.57	116.6	15	1	0.43	785.9571429	3.3	-1.850	1.05	35.190	97
field	48	7	-72.57	116.6	14	1	0.43	785.9571429			1.15					0.329	21.061	0.267	5.626	0.851
field	49	7	-72.57	116.6	13	1	0.43	785.9571429	2.9	-1.150	1.25	22.253	25
field	50	7	-72.57	116.6	12	1	0.43	785.9571429	2.2	-1.900	1.35	36.114	132
field	51	7	-72.57	116.6	11	1	0.43	785.9571429	2.8	-1.700	1.45	32.417	73
field	52	7	-72.57	116.6	10	1	0.43	785.9571429	2.6	-2.000	1.55	37.962	69
field	53	7	-72.57	116.6	9	1	0.43	785.9571429	2.7	-1.850	1.65	35.190	34
field	54	7	-72.57	116.6	8	1	0.43	785.9571429	3.7	-1.450	1.75	27.797	33
field	55	7	-72.57	116.6	7	1	0.43	785.9571429	2.7	-1.000	1.85	19.481	10
field	56	7	-72.57	116.6	6	1	0.43	785.9571429	3.1	-1.550	1.95	29.645	17
field	57	7	-72.57	116.6	5	1	0.43	785.9571429	4.1	-2.100	2.05	39.810	16
field	58	7	-72.57	116.6	4	1	0.43	785.9571429	3.4	-1.700	2.15	32.417	18
field	59	7	-72.57	116.6	3	1	0.43	785.9571429	4.3	-1.850	2.25	35.190	16
field	60	7	-72.57	116.6	2	1	0.43	785.9571429	6.6	-1.600	2.35	30.569	4
field	61	7	-72.57	116.6	1	1	0.43	785.9571429	4.4	-1.200	2.45	23.177	3
field	62	8	-72.11	118.6	15	1	0.55	274.2000000		-1.700	0.05	32.417				0.369	86.875	0.423	36.755	0.626			21.855	55.812	1.671
field	63	8	-72.11	118.6	14	1	0.55	274.2000000	3.2	-1.500	0.15	28.721	1
field	64	8	-72.11	118.6	13	1	0.55	274.2000000	3.2	-1.700	0.25	32.417	5
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field	66	8	-72.11	118.6	11	1	0.55	274.2000000	2.9	-1.600	0.45	30.569	8
field	67	8	-72.11	118.6	10	1	0.55	274.2000000	3.5	-1.700	0.55	32.417	21
field	68	8	-72.11	118.6	9	1	0.55	274.2000000	3.4	-1.650	0.65	31.493	29
field	69	8	-72.11	118.6	8	1	0.55	274.2000000	2.2	-1.600	0.75	30.569	38
field	70	8	-72.11	118.6	7	1	0.55	274.2000000	2.3	-1.750	0.85	33.342	103
field	71	8	-72.11	118.6	6	1	0.55	274.2000000	2.7	-1.600	0.95	30.569	56
field	72	8	-72.11	118.6	5	1	0.55	274.2000000	1.1	-1.400	1.05	26.873	72
field	73	8	-72.11	118.6	4	1	0.55	274.2000000	1.3	-1.350	1.15	25.949	144
field	74	8	-72.11	118.6	3	1	0.55	274.2000000	1.1	-1.450	1.25	27.797	146
field	75	8	-72.11	118.6	2	1	0.55	274.2000000	1.6	-1.400	1.35	26.873	1
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field	77	8	-72.11	118.6	15	2	0.55	274.2000000			0.05	32.417	10
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field	79	8	-72.11	118.6	13	2	0.55	274.2000000	3.2	-1.700	0.25	32.417	3
field	80	8	-72.11	118.6	12	2	0.55	274.2000000	3.5	-1.600	0.35	30.569	12
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field	83	8	-72.11	118.6	9	2	0.55	274.2000000	3.4	-1.650	0.65	31.493	32
field	84	8	-72.11	118.6	8	2	0.55	274.2000000	2.2	-1.600	0.75	30.569	33
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field	86	8	-72.11	118.6	6	2	0.55	274.2000000	2.7	-1.600	0.95	30.569	41
field	87	8	-72.11	118.6	5	2	0.55	274.2000000	1.1	-1.400	1.05	26.873	70
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field	90	8	-72.11	118.6	2	2	0.55	274.2000000	1.6	-1.400	1.35	26.873	136
field	91	8	-72.11	118.6	1	2	0.55	274.2000000	3.0	-1.100	1.45	21.329	131
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field	93	9	-72.03	123.1	9	1	0.25	823.6000000	5.7	-1.550	0.15	29.645	11
field	94	9	-72.03	123.1	8	1	0.25	823.6000000	4.5	-1.550	0.25	29.645	13
field	95	9	-72.03	123.1	7	1	0.25	823.6000000	3.4	-1.200	0.35	23.177	49
field	96	9	-72.03	123.1	6	1	0.25	823.6000000	4.6	-1.350	0.45	25.949	336
field	97	9	-72.03	123.1	5	1	0.25	823.6000000	7.4	-1.450	0.55	27.797	700
field	98	9	-72.03	123.1	4	1	0.25	823.6000000	9.1	-1.600	0.65	30.569	156
field	99	9	-72.03	123.1	3	1	0.25	823.6000000	9.5	-1.650	0.75	31.493	122
field	100	9	-72.03	123.1	2	1	0.25	823.6000000	9.1	-1.700	0.85	32.417	78
field	101	9	-72.03	123.1	1	1	0.25	823.6000000	8.2	-1.750	0.95	33.342	45
field	102	9	-72.03	123.1	10	2	0.25	823.6000000	7.5	-1.333	0.05	25.641	5
field	103	9	-72.03	123.1	9	2	0.25	823.6000000	5.7	-1.550	0.15	29.645	19
field	104	9	-72.03	123.1	8	2	0.25	823.6000000	4.5	-1.550	0.25	29.645	30
field	105	9	-72.03	123.1	7	2	0.25	823.6000000	3.4	-1.200	0.35	23.177	195
field	106	9	-72.03	123.1	6	2	0.25	823.6000000	4.6	-1.350	0.45	25.949	475
field	107	9	-72.03	123.1	5	2	0.25	823.6000000	7.4	-1.450	0.55	27.797	780
field	108	9	-72.03	123.1	4	2	0.25	823.6000000	9.1	-1.600	0.65	30.569	176
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field	110	9	-72.03	123.1	2	2	0.25	823.6000000	9.1	-1.700	0.85	32.417	52
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field	129	10	-72.10	127.1	1	1	0.25	901.1000000			1.75	31.801	26
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field	139	12	-72.48	135.4	4	1	0.10	857.7428571	4.0	-1.650	0.95	31.493	13
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field	151	12	-72.48	135.4	5	2	0.10	857.7428571	4.8	-1.600	0.85	30.569	2
field	152	12	-72.48	135.4	4	2	0.10	857.7428571	4.0	-1.650	0.95	31.493	5
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field	160	13	-73.26	139.2	6	1	0.07	997.5714286	3.6	-0.933	0.45	18.249	0
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field	168	13	-73.26	139.2	8	2	0.07	997.5714286	3.0	-0.900	0.25	17.633	0
field	169	13	-73.26	139.2	7	2	0.07	997.5714286	3.4	-0.933	0.35	18.249	0
field	170	13	-73.26	139.2	6	2	0.07	997.5714286	3.6	-0.933	0.45	18.249	4
field	171	13	-73.26	139.2	5	2	0.07	997.5714286	2.9	-1.100	0.55	21.329	2
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field	173	13	-73.26	139.2	3	2	0.07	997.5714286	2.7	-0.800	0.75	15.785	1
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field	175	13	-73.26	139.2	1	2	0.07	997.5714286	4.3	-0.500	0.95	10.240	3
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field	177	14	-75.33	149.2	13	1	0.38	212.0571429	5.9	-1.900	0.15	36.114	7
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field	179	14	-75.33	149.2	11	1	0.38	212.0571429	6.2	-2.650	0.35	49.974	19
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field	182	14	-75.33	149.2	8	1	0.38	212.0571429	4.7	-2.450	0.65	46.278	10
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field	189	14	-75.33	149.2	1	1	0.38	212.0571429	3.8	-1.100	1.35	21.329	106
field	190	14	-75.33	149.2	14	2	0.38	212.0571429	4.8	-1.650	0.05	31.493	11
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field	193	14	-75.33	149.2	11	2	0.38	212.0571429	6.2	-2.650	0.35	49.974	10
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field	198	14	-75.33	149.2	6	2	0.38	212.0571429	4.6	-2.400	0.85	45.354	5
field	199	14	-75.33	149.2	5	2	0.38	212.0571429	4.9	-1.600	0.95	30.569	8
field	200	14	-75.33	149.2	4	2	0.38	212.0571429	4.9	-1.600	1.05	30.569	15
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field	204	15	-77.35	165.4	14	1	0.00	859.7000000	1.4	-1.340	0.05	25.764	0
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field	207	15	-77.35	165.4	11	1	0.00	859.7000000	4.6	-1.250	0.35	24.101	0
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field	223	15	-77.35	165.4	9	2	0.00	859.7000000	5.6	-1.250	0.55	24.101	0
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field	228	15	-77.35	165.4	4	2	0.00	859.7000000	4.2	-0.900	1.05	17.633	0
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field	233	4	-70.91	111.9	2	1	0.12	633.9428571								0.359	166.880	0.522	85.958
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field	240	4	-70.91	111.9	7	2	0.12	633.9428571	2.9	-1.350		25.949				0.351	75.807	0.395	29.968		8.055	1722.864				9	33.86	420.69	422.59	1662.22	26.79	1717.89	0.37	0.68
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field	242	4	-70.91	111.9	9	2	0.12	633.9428571	4.3	-1.650		31.493	12
field	243	4	-70.91	111.9	10	2	0.12	633.9428571	3.6	-1.800		34.266	5
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field	245	5	-72.25	115.3	9	1	0.31	498.8142857	7.6	-1.350	0.05	25.949			958364.581	0.439	121.901	0.727	88.562	0.403	8.602	295.366				9	1.42	18.17	18.25	275.22	18.72	332.56	0.28	0.50
field	246	5	-72.25	115.3	8	1	0.31	498.8142857	7.4	-1.500	0.15	28.721	1
field	247	5	-72.25	115.3	7	1	0.31	498.8142857	6.3	-1.650	0.25	31.493	6
field	248	5	-72.25	115.3	6	1	0.31	498.8142857	5.2	-1.800	0.35	34.266	8
field	249	5	-72.25	115.3	5	1	0.31	498.8142857	3.3	-1.850	0.45	35.190	14
field	250	5	-72.25	115.3	4	1	0.31	498.8142857	3.2	-1.750	0.55	33.342	76
field	251	5	-72.25	115.3	3	1	0.31	498.8142857	3.1	-2.000	0.65	37.962	18
field	252	5	-72.25	115.3	1	1	0.31	498.8142857	4.1	-1.800	0.85	34.266	46
field	253	5	-72.25	115.3	9	2	0.31	498.8142857	7.6	-1.350	0.05	25.949	2
field	254	5	-72.25	115.3	8	2	0.31	498.8142857	7.4	-1.500	0.15	28.721	1
field	255	5	-72.25	115.3	7	2	0.31	498.8142857	6.3	-1.650	0.25	31.493	2
field	256	5	-72.25	115.3	6	2	0.31	498.8142857	5.2	-1.800	0.35	34.266	13
field	257	5	-72.25	115.3	5	2	0.31	498.8142857	3.3	-1.850	0.45	35.190	19
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field	259	5	-72.25	115.3	3	2	0.31	498.8142857	3.1	-2.000	0.65	37.962	16
field	260	5	-72.25	115.3	2	2	0.31	498.8142857	3.5	-1.900	0.75	36.114	10
field	261	5	-72.25	115.3	1	2	0.31	498.8142857	4.1	-1.800	0.85	34.266	43
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