When it comes to PPS+, a mining yield consists of two components, namely PPS+(PPS) and PPS+(PPLNS). In a PPS+ payment scheme, all block rewards, including transaction fees, are distributed. This enables miners to achieve higher mining yields compared to a traditional PPS approach (no transaction fees are distributed).
PPS+(PPS): This only relates to the number of proofs of work of your miner(s). Your income sources are stable as long as your miner(s) operate(s) normally.
PPS+(PPLNS): This relates to the number of proofs of work of your miner(s) and whether the mining pool generates blocks. After the mining pool generates a block, all transaction fee rewards for the block are distributed to miners in proportion to the number of their proofs of work.