PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-19:42:40
G01     69.0           32.4               11.9 +/-    0.76      19.9 +/-    0.76  0.090 / 0.150
G07     137.6          23.7               13.9 +/-    1.70      27.9 +/-    1.70  0.090 / 0.190
G11     52.0           29.4               10.7 +/-    1.10      18.9 +/-    1.10  0.050 / 0.060
G13     272.2          38.2               13.8 +/-    0.76      20.7 +/-    0.76  0.040 / 0.060
G15     300.8          15.8                9.9 +/-    2.45      24.1 +/-    2.45  0.090 / 0.320
G17     234.3          70.5               14.0 +/-    0.94      14.7 +/-    0.94  0.090 / 0.320
G18     46.6           16.4                9.8 +/-    1.67      23.6 +/-    1.67  0.050 / 0.090
G19     224.2          43.4               14.9 +/-    0.83      20.6 +/-    0.83  0.060 / 0.080
G28     12.4           60.5               11.2 +/-    0.57      12.7 +/-    0.57  0.120 / 0.320
G30     136.7          58.7               14.5 +/-    0.58      16.7 +/-    0.58  0.150 / 0.390