Ok,
Go with what I suggested then.
These lines can be deleted:
Serial.print(" spanning1 = ");
Serial.print(Readspanning1);
as the byte will not contain useful info.
After this in setup:
SPI.begin();
add this:
SPI.setDataMode(3); // 3, or SPI_MODE3 ??
Read the article here
and confirm the mode that supports this:
The idle state of the serial clock for the SPV1020 is high, while data pins
are driven on the falling edges of the serial clock and are sampled on its rising edges (SPI control bits CPOL = 1, and CPHA = 1).