rBatt

# this is what 'test' looks like: 
# > test
#          s.reg year num      nameID     stratum    lon  lat btemp depth        N Nsite                      spp Z      u.a0          a1         a2
#       1:   ebs 1982  12 ebs_1982_12 -158.5 57.5 -158.5 57.5 -0.16  34.4 919.4999    83 Acantholithodes hispidus 0 -2.807526  0.60290095 -0.1560553
#       2:   ebs 1982  12 ebs_1982_12 -158.5 57.5 -158.5 57.5 -0.16  34.4 919.4999    83  Acantholumpenus mackayi 0 -4.294548  0.66363085 -0.1244255
#       3:   ebs 1982  12 ebs_1982_12 -158.5 57.5 -158.5 57.5 -0.16  34.4 919.4999    83       Actinauge verrilli 0 -2.763588  0.67887606 -0.1261046
#       4:   ebs 1982  12 ebs_1982_12 -158.5 57.5 -158.5 57.5 -0.16  34.4 919.4999    83            Admete regina 0 -3.658542  0.66688800 -0.1661476
#       5:   ebs 1982  12 ebs_1982_12 -158.5 57.5 -158.5 57.5 -0.16  34.4 919.4999    83         Aforia circinata 0 -9.954288  0.67970755 -0.1168343
#      ---

rBatt

png(file="~/Desktop/figure.png", width=3.5, height=3.5, res=150, units="in") # open / setup device

par(
  mar=c(1.75, 1.75, 0.1, 0.1), # panel magin size in "line number" units
  mgp=c(1, 0.1, 0), # default is c(3,1,0); line number for axis label, tick label, axis
  tcl=-0.1, # size of tick marks as distance INTO figure (negative means pointing outward)
  cex=1, # character expansion factor; keep as 1; if you have a many-panel figure, they start changing the default!
  ps=8, # point size, which is the font size
  family="sans"

rBatt

% ===============
% = Bookkeeping =
% ===============
% Equation 3: average respiration
R_{\mu} = \frac{\sum\limits_{i=1}^{n} \Delta DO_i - F_i}{n \Delta t}

NEP = \frac{NEP_t (\text{mg O}_2 \text{ L}^{\text{-}1} \Delta t)} {1}