Can someone tell me the difference between these fuel injectors?

0 280 150 015

0 280 150 024

0 280 150 036

My 280se 4.5 has 7 x 0280150036
and one of the 0280150024 installed.
Both types are blue top injectors.

In the "1972 Mercedes table book" I find
the 0280150015 as the original Bosch partnumber for the car.

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´64 W111 220seb coupé
´66 W113 230sl pagode
´67 W110 230 6cyl
´69 W111 280sec coupé
´71 W115 250ce coupé
´72 W108 280se 4.5
´73 W108 280se 4.5
´79 W123 300d auto
´80 W123 230ce 4cyl