PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/23-15:58:10
G03     196.2          37.2               10.3 +/-    1.57      15.7 +/-    1.57  0.030 / 0.040
G07     272.9          26.4                9.1 +/-    1.93      17.1 +/-    1.93  0.040 / 0.050
G08     156.2          11.8                9.2 +/-   14.74      24.6 +/-   14.74  0.350 / 0.610
G09     318.1          44.4                8.9 +/-    0.68      12.1 +/-    0.68  0.400 / 0.480
G16     53.9           54.3                8.7 +/-    0.36      10.5 +/-    0.36  0.030 / 0.030
G22     179.2          18.9                9.1 +/-    2.11      20.6 +/-    2.11  0.020 / 0.030
G23     20.9           79.4                8.9 +/-    0.68       9.0 +/-    0.68  0.120 / 0.120
G26     43.7           25.4                9.0 +/-    2.71      17.3 +/-    2.71  0.120 / 0.180
G27     118.1          23.8               10.7 +/-    1.31      21.6 +/-    1.31  0.190 / 0.200