PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-01:57:40
G02     218.4          65.1               10.3 +/-    0.41      11.3 +/-    0.41  0.050 / 0.070
G06     51.8           72.3                7.9 +/-    0.71       8.3 +/-    0.71  0.070 / 0.070
G12     319.3          38.2                5.9 +/-    1.02       8.8 +/-    1.02  0.050 / 0.080
G17     57.8           33.6                4.4 +/-    0.82       7.2 +/-    0.82  0.050 / 0.080
G19     42.5           47.5                5.5 +/-    0.79       7.1 +/-    0.79  0.100 / 0.430
G24     261.7          40.7                8.5 +/-    0.68      12.2 +/-    0.68  0.190 / 0.400
G28     124.9          10.9                6.8 +/-    2.66      18.6 +/-    2.66  0.070 / 0.090