PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/28-00:27:40
G02     353.8          76.7                9.1 +/-    1.17       9.3 +/-    1.17  0.030 / 0.030
G05     162.3          36.1               15.8 +/-    1.28      24.5 +/-    1.28  0.030 / 0.030
G06     41.0           41.0                8.2 +/-    0.85      11.7 +/-    0.85  0.200 / 0.230
G12     310.4          70.1                9.6 +/-    0.60      10.1 +/-    0.60  0.130 / 0.220
G17     87.4           9.7                12.1 +/-    5.34      34.0 +/-    5.34  0.100 / 0.150
G19     76.6           25.6               10.5 +/-    1.58      20.2 +/-    1.58  0.080 / 0.100
G24     225.9          21.0               14.2 +/-    1.40      30.6 +/-    1.40  0.060 / 0.070
G25     316.6          31.1                9.4 +/-    1.62      16.2 +/-    1.62  0.060 / 0.050
G29     288.7          13.2               10.9 +/-    3.24      28.3 +/-    3.24  0.050 / 0.070