PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-23:57:40
G02     215.4          60.4               10.7 +/-    1.05      12.1 +/-    1.05  0.050 / 0.060
G06     66.4           78.4                8.8 +/-    0.44       9.0 +/-    0.44  0.060 / 0.090
G12     317.2          32.7                7.9 +/-    1.63      13.1 +/-    1.63  0.040 / 0.050
G17     57.1           31.9                8.4 +/-    2.01      14.2 +/-    2.01  0.040 / 0.050
G19     38.4           49.4                8.9 +/-    0.86      11.2 +/-    0.86  0.110 / 0.210
G24     264.4          41.9               11.0 +/-    2.67      15.6 +/-    2.67  0.120 / 0.210
G28     120.9          17.9               11.3 +/-    1.37      26.2 +/-    1.37  0.060 / 0.090