These pages sorted by the size of $t$
These pages sorted by the size of $Z(t)$
These pages sorted by the size of $S(t)$
Here are some pictures of and information about $Z(t)$ and $S(t)$ for some large values of $t$. The $Z$ function is the zeta function on the critical line, rotated so that it is real, so \[ Z(t) = e^{i Arg(\zeta(1/2 + it)} \zeta(1/2 + it) \] $S(t)$ is the argument of $\zeta(1/2 + it)$, properly interpreted. In some way, it measures irregularity in the distribution of the zeros of the zeta function.
These are from computations run by Ghaith Hiary and myself, based on the algorithm described in Ghaith's paper (also available at the arXiv). These computations have been run on a variety of machines. Initially, we used machines on the Sage cluster at the University of Washington (thanks to William Stein and the NSF), then later the riemann cluster at University of Waterloo (thanks to Mike Rubinstein). Currently, computations are being run at the University of Bristol on the LMFDB machines (funded by EPSRC) and on BlueCrystal.
If your web browser window is big enough, in the top right of each section below you will see a plot of Z(t), in the bottom left you will see S(t), and in the bottom right you will see a zoomed in plot of Z(t). Things are sized roughly so that this looks good on my 1080p monitor.
The images are all links that will take you to a zoomable version of the plot.
You can click on any image for a bigger version. Also, you can look at a list of all of the images: Z(t) or S(t).
See also:
$\zeta(1/2 + it)$ around $t = 13018604908923222386363079300912 \approx 1.30186049089 \times 10^{ 31 }$
Largest value of $Z(t)$ in this graph:-8776.261814
Value of $t$ for which the maximum occurs:13018604908923222386363079300932.93299609
Value of $\zeta(1/2 + it)$:$7256.348641 - 4936.413254i$
Maximum of $S(t)$ in this range:3.015354651
$\zeta(1/2 + it)$ around $t = 182947305623024546647302946781 \approx 1.82947305623 \times 10^{ 29 }$
Largest value of $Z(t)$ in this graph:-6361.82605
Value of $t$ for which the maximum occurs:182947305623024546647302946801.20419141
Value of $\zeta(1/2 + it)$:$4768.65483 - 4211.028592i$
Maximum of $S(t)$ in this range:3.001007294
$\zeta(1/2 + it)$ around $t = 6083028695276545807063248346835 \approx 6.08302869528 \times 10^{ 30 }$
Largest value of $Z(t)$ in this graph:9739.335524
Value of $t$ for which the maximum occurs:6083028695276545807063248346855.90626953
Value of $\zeta(1/2 + it)$:$9646.371908 - 1342.447564i$
Maximum of $S(t)$ in this range:-2.992678907
$\zeta(1/2 + it)$ around $t = 29578578192128169431279180 \approx 2.95785781921 \times 10^{ 25 }$
Largest value of $Z(t)$ in this graph:-4876.084058
Value of $t$ for which the maximum occurs:29578578192128169431279200.87824609
Value of $\zeta(1/2 + it)$:$3942.70957 + 2869.013243i$
Maximum of $S(t)$ in this range:2.982978869
$\zeta(1/2 + it)$ around $t = 698156288971519916135942940440 \approx 6.98156288972 \times 10^{ 29 }$
Largest value of $Z(t)$ in this graph:11195.68103
Value of $t$ for which the maximum occurs:698156288971519916135942940460.33499609
Value of $\zeta(1/2 + it)$:$10940.47743 - 2376.810349i$
Maximum of $S(t)$ in this range:-2.981733857
$\zeta(1/2 + it)$ around $t = 30465914301167699710444825946 \approx 3.04659143012 \times 10^{ 28 }$
Largest value of $Z(t)$ in this graph:-4797.593944
Value of $t$ for which the maximum occurs:30465914301167699710444825966.80499609
Value of $\zeta(1/2 + it)$:$4433.424621 + 1833.481328i$
Maximum of $S(t)$ in this range:-2.97505049
$\zeta(1/2 + it)$ around $t = 85052987797410463487724040101 \approx 8.50529877974 \times 10^{ 28 }$
Largest value of $Z(t)$ in this graph:-9681.157815
Value of $t$ for which the maximum occurs:85052987797410463487724040121.40299609
Value of $\zeta(1/2 + it)$:$9050.938408 - 3435.888614i$
Maximum of $S(t)$ in this range:-2.96822366
$\zeta(1/2 + it)$ around $t = 12635936398857856895456726 \approx 1.26359363989 \times 10^{ 25 }$
Largest value of $Z(t)$ in this graph:-5095.028872
Value of $t$ for which the maximum occurs:12635936398857856895456746.26499609
Value of $\zeta(1/2 + it)$:$4781.931171 + 1758.537314i$
Maximum of $S(t)$ in this range:2.96365875
$\zeta(1/2 + it)$ around $t = 45890014847929271884961558864608 \approx 4.58900148479 \times 10^{ 31 }$
Largest value of $Z(t)$ in this graph:9976.374168
Value of $t$ for which the maximum occurs:45890014847929271884961558864628.19499609
Value of $\zeta(1/2 + it)$:$9319.982778 - 3558.927165i$
Maximum of $S(t)$ in this range:2.963500752
$\zeta(1/2 + it)$ around $t = 305937680740931723147858123112 \approx 3.05937680741 \times 10^{ 29 }$
Largest value of $Z(t)$ in this graph:-5906.914516
Value of $t$ for which the maximum occurs:305937680740931723147858123132.50838672
Value of $\zeta(1/2 + it)$:$4480.615516 - 3849.11986i$
Maximum of $S(t)$ in this range:2.961948189
