Climatic Variation at Thumba Equatorial Rocket Launching Station, India

Table 6

Linear trends of 11 year moving averaged data on various inter-annual variability. Level of significance was choosen at 0.05% to read out critical 𝑡 values (𝑡_𝑐) corresponding to the degree of freedom (df). If 𝑟>0.5 strong, 𝑟<0.5 weak, 𝑡>𝑡_𝑐 significant, and 𝑡<𝑡_𝑐 not significant.

No.	Interannual variability in	𝑟	Slope (𝑑𝑦/𝑑𝑥) ± error	Calculated 𝑡	df	Comments	Data missing
1	Mean temperature	0.891	0.013±0.001	12.08154	38	Strong and significant. (Figures 7(a) and 7(b))	1974, 1975, 1976, 1982, and 1992
2	Mean maximum temperature	0.725	0.0121±0.002	6.50392	38	Strong and significant.; (Figures 8(a) and 8(b)	1974, 1975, 1976, 1982, and 1992
3	Mean minimum temperature	0.952	0.014±0.000	19.29677	38	Strong and significant.; (Figures 9(a) and 9(b))	1974, 1975, 1976, 1982, and 1992
4	Mean temperature range	−0.190	−0.002±0.002	−1.19078	38	Weak and not significant (Figure 10(a)).	1974, 1975, 1976, 1982, and 1992
5	South West monsoon rainfall (Thumba)	−0.477	−2.145±0.616	−3.483	41	Weak and significant (Figure 14)	1964, 1998
6	North East monsoon rainfall (Thumba)	0.848	3.928±0.393	10.000	39	Strong and significant (Figure 15)	1964, 1977, 1992, and 1998
7	South West monsoon rainfall (Kerala)	−0.721	−6.149±0.934	−6.587	40	Strong and significant (Figure 16)	1964, 2007, and 2008
8	North East monsoon rainfall (Kerala)	0.737	3.430±0.491	6.986	41	Strong and significant (Figure 17)	1964, 2008
9	South West monsoon surface pressure	0.445	0.006±0.002	2.899	34	Weak and significant (Figure 18)	1964 to 1972
10	North East monsoon surface pressure	−0.616	0.010±0.002	−4.555	34	Strong and significant (Figure 19)	1964 to 1972