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Table 2 The time order of convergence and mass errors of the scheme

From: A mass-conserved domain decomposition method for the unsaturated soil flow water problem

t Δt 1/250 1/1000 1/2000 1/4000
0.1 \(L^{2}\)-norm- 1.0671E−3 2.5095E−4 1.2075E−4 6.3302E−5
order 1.0441 1.0554 0.9317
mass error 1.2228E−15 2.6583E−16 1.3142E−16 1.8414E−15
0.2 \(L^{2}\)-norm- 1.4099E−3 3.7218E−4 1.7956E−4 9.7289E−5
order 0.9608 1.0515 0.8841
mass error 5.4347E−16 1.3609E−15 1.2970E−15 2.1003E−16
0.5 \(L^{2}\)-norm- 1.5520E−3 4.5392E−4 2.1815E−4 1.2226E−4
order 0.8868 1.0571 0.8354
mass error 1.4268E−15 3.9946E−15 2.2446E−16 1.0600E−15