diff --git a/README.md b/README.md
index 7b5c9e4159f106b28fe7efa90adcc5d369a822cd..b2efba8fea831a728011f539fcb35e78c2ed143b 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,6 @@
 |0.148|prior|IBM ES/9000|C|prior|
 |0.134|prior|Pentium III|C|prior|
 |0.118|prior|Cray Y-MP4/464|C, vector|prior|
-|0.093|[pi.ino](Arduino/pi.ino)|Arduino, floats|IMXRT1062<br>Teensy 4.1, 600 MHz|August, 2021|
 |0.074|[pi.c](C/pi.c)|C<br>gcc pi.c -o pi -lm -O3 -ffast-math|Raspberry Pi Zero|December, 2020|
 |0.029|[pi.py](Python/pi.py)|Python|Intel i7-8700T|November, 2018|
 |0.0168|[pi.c](https://gitlab.cba.mit.edu/zfredin/samd51_benchmarks)|C<br>floats, -O3, gcc-arm-none-eabi, 160 MHz|SAMD51J20A<br>ARM Cortex M4F|October, 2019|
@@ -60,7 +59,8 @@
 |0.00003|prior|Intel 286|C|prior|
 |0.000001|prior|Intel 8088|C|prior|
 
-|estimated GFlops|estimated GFlops/W|code|description|system|date|
-|---|---|---|---|---|---|
-|0.0168|0.233<br>calculated|[pi.c](https://gitlab.cba.mit.edu/zfredin/samd51_benchmarks)|C<br>floats, -O3, gcc-arm-none-eabi, 160 MHz|SAMD51J20A<br>ARM Cortex M4F|October, 2019|
-|0.0128|0.171<br>calculated|[pi.c](https://gitlab.cba.mit.edu/zfredin/stm32f412_core/tree/master/nucleo-f412zg/pi)|C<br>floats, -O3, gcc-arm-none-eabi, 84 MHz|STM32F412<br>ARM Cortex M4F|October, 2019|
+|estimated GFlops|estimated GFlops/W|estimated GFlops/$|code|description|system|date|
+|---|---|---|---|---|---|---|
+|0.093|.|.|[pi.ino](Arduino/pi.ino)|Arduino, floats|IMXRT1062<br>Teensy 4.1, 600 MHz|August, 2021|
+|0.0168|0.233<br>calculated|.|[pi.c](https://gitlab.cba.mit.edu/zfredin/samd51_benchmarks)|C<br>floats, -O3, gcc-arm-none-eabi, 160 MHz|SAMD51J20A<br>ARM Cortex M4F|October, 2019|
+|0.0128|0.171<br>calculated|.|[pi.c](https://gitlab.cba.mit.edu/zfredin/stm32f412_core/tree/master/nucleo-f412zg/pi)|C<br>floats, -O3, gcc-arm-none-eabi, 84 MHz|STM32F412<br>ARM Cortex M4F|October, 2019|