ping – Understanding Ping Statistics Time Meaning

From the ping manpage (emphasis mine):

When the specified number of packets have been sent (and received) or if the program is terminated with a SIGINT, a brief summary is displayed. Shorter current statistics can be obtained without termination of process with signal SIGQUIT.

So this will work if you're fine with your stats being slightly less verbose:

# the second part is only for showing you the PID
ping 8.8.8.8 & jobs ; fg

<... in another terminal ...>

kill -SIGQUIT $PID

Short statistics look like this:

19/19 packets, 0% loss, min/avg/ewma/max = 0.068/0.073/0.074/0.088 ms

The last value, labeled mdev under Linux and stddev under Solaris is computed slightly differently depending on these OSes.

The formula used by Linux ping is:

sqrt(smean-mean²)

while the one used by Solaris ping is:

sqrt((smean-mean²)*received/received-1)

with smean being the mean of rtt squares, mean the mean of rtt values and received the number of answers received.

Here is a small awk program using your data and showing how are computed these values.

echo "1.91 2.83 4.41 1.83 2.98 2.18 2.15 1.68 2.30 2.04 1.64 1.98 1.69 1.88
1.91 1.83 1.70 2.00 2.03 1.89 2.36 2.12 2.07 1.91 1.84 2.04 2.05 2.10 2.19
2.22 1.94 2.13 1.98 2.08 1.62 3.29 2.17 1.99 2.38 2.55 2.16 1.90 1.92 1.90
2.89 2.04 2.05 2.12 2.18 1.61 2.08 1.90 2.17 3.01 1.84 2.12 20.9 362 2.07
2.31 2.42 2.05 2.47 2.55 2.13 2.56 2.07 468 2.33 2.32 1.93 1.87 2.50 1.82
2.45 1.95" | awk '
function abs(v) {return v < 0 ? -v : v}
BEGIN {
  min=0x7fffffff;
}
{
  for(i=0;i<NF;i++) {
    received++
    v=$i
    min=v<min?v:min;
    max=v>max?v:max;
    sum+=v
    sum2+=v*v
  }
}
END {
  mean=sum/received
  smean=sum2/received
  printf("received=%d, min=%f, avg=%f, max=%f\n",received,min,sum/received,max)
  printf("Linux ping mdev: %f\n", sqrt(smean-(mean*mean)))
  printf("Solaris ping stddev: %f\n", sqrt(((smean-(mean*mean))*received)/(received-1)))
}
'

Its output is consistent with your test:

received=76, min=1.610000, avg=13.294211, max=468.000000
Linux ping mdev: 66.632781
Solaris ping stddev: 67.075529