1V <Last Survey before failure <-1x <-3x <1800cpm from turbine <-1x <-2x or 2*lf <-3x <-4x <Last Survey before failure
2A <Last Survey before failure <-1x <-3x <1800cpm from turbine <-1x <-2x or 2*lf <-3x <-4x <Last Survey before failure
2H <Last Survey before failure <-1x <-3x <1800cpm from turbine <-1x <-2x or 2*lf <-3x <-4x <Last Survey before failure
2V <Last Survey before failure <-1x <-3x <1800cpm from turbine <-1x <-2x or 2*lf <-3x <-4x <Last Survey before failure
3A <Last Survey before failure <-1x <-3x <1800cpm from turbine <-1x <-2x or 2*lf <-3x <-4x <Last Survey before failure
3H <Last Survey before failure <-1x <-3x <1800cpm from turbine <-1x <-2x or 2*lf <-3x <-4x <Last Survey before failure
3V <Last Survey before failure <-1x <-3x <1800cpm from turbine <-1x <-2x or 2*lf <-3x <-4x <Last Survey before failure