North_America: DNI, stddev (W/m2)
site ALB^ ARI BAR BIS^ BON^ BOU^ BUR* DES FOP GOL GOO^ HAF^ HER* LAN^ LAS MAD^ OAK*^ PAN ROS^ SAL^ SEA^ SET* SIL* SIO^ SOL SRR STR Mean Std
model                                                          
SOLARGIS 153.9 135.5 nan 143.2 147.2 199.7 163.9 157.8 157.7 184.2 113.1 111.0 128.4 106.4 142.4 115.9 112.3 115.7 151.5 154.4 110.8 146.3 173.6 152.7 166.1 184.3 121.0 142.6 25.1
NSRDBGOES 139.6 128.3 nan 153.9 154.3 200.7 169.6 132.2 177.4 199.4 148.8 124.0 127.2 134.3 126.9 151.3 141.1 163.0 179.2 153.2 156.6 181.3 170.5 161.7 160.9 184.1 139.3 154.4 20.6
METEOTEST 162.4 158.0 nan 163.1 204.8 215.0 208.4 153.9 239.8 nan 166.1 117.1 164.0 134.4 157.1 142.1 116.5 151.5 166.0 171.2 127.0 193.9 188.5 248.2 193.6 225.8 161.9 173.2 35.8
CERES 404.0 402.6 374.8 462.4 393.2 408.1 414.8 353.4 417.2 456.1 390.4 357.3 457.6 426.7 366.1 430.4 441.9 413.0 418.1 453.1 435.1 438.6 444.8 427.1 421.2 459.6 414.0 418.0 29.8