Table 1 Slopes and coefficients of determination (R²) of the observed (Obs), ERA-Int (ERA) and MERRA2 wet season precipitation, TCWV, CAPE and LCL with respect to elevation.

Variables	Groups	Sample sizes			Slopes			R²
Variables	Groups	Obs	ERA	MERRA2	Obs	ERA	MERRA2	Obs	ERA	MERRA2
Precipitation (mm/m)^a	Red	94	59	65	0.19*	0.32*	0.33*	0.82	0.66	0.45
	Yellow	6	6	6	0.12*	0.06*	0.11*	0.84	0.94	0.86
	Purple	21	21	18	0.24*	0.38*	0.30*	0.56	0.55	0.13
	Green	35	24	30	−0.02	0.07	0.19*	0.01	0.03	0.10
	Blue	28	22	23	−0.19*	0.20	−0.10	0.15	0.06	0
TCWV (kg m⁻²/m)^a	Red					−0.20*	−0.22*		0.39	0.39
	Yellow					−0.36*	−0.47*		0.77	0.90
	Purple					0.13*	0.15		0.19	0.15
	Green					−1.37*	−1.41*		0.96	0.96
	Blue					−0.09	−0.26*		0.02	0.13
CAPE (J kg⁻¹/m)^a	Red					0.11*	0.01*		0.87	0.62
	Yellow					0.03	0		0.53	0.02
	Purple					0.20*	0.02*		0.75	0.52
	Green					0.02	−0.03*		0.05	0.27
	Blue					0.29*	0		0.33	0
LCL (m/m)^a	Red					−0.59*	−0.68*		0.83	0.79
	Yellow					−0.54	−0.57*		0.48	0.94
	Purple					−0.43*	−0.41*		0.50	0.40
	Green					−0.05*	−0.05		0.14	0.07
	Blue					−0.09	0.14		0.01	0.01

The units of the slopes are denoted by^a; *Represents statistically significant values at 90% confidence level based on the two tailed student t-test.

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