PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/28-01:58:10
G02     21.8           64.8                8.8 +/-    0.52       9.6 +/-    0.52  0.020 / 0.030
G05     152.4          51.0               13.1 +/-    0.77      16.3 +/-    0.77  0.030 / 0.030
G06     47.6           25.6                8.4 +/-    1.73      16.2 +/-    1.73  0.030 / 0.030
G12     237.9          79.0               11.0 +/-    0.32      11.2 +/-    0.32  0.030 / 0.040
G19     89.3           18.3               10.8 +/-    3.15      24.8 +/-    3.15  0.040 / 0.060
G24     216.7          11.4               15.5 +/-    2.60      41.9 +/-    2.60  0.040 / 0.060
G25     311.0          42.9                9.4 +/-    0.94      13.0 +/-    0.94  0.170 / 0.120
G29     298.1          18.6                8.7 +/-    1.52      19.7 +/-    1.52  0.140 / 0.090