PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-19:58:00
G01     59.2           30.0               12.3 +/-    0.62      21.5 +/-    0.62  0.080 / 0.160
G06     181.1          13.4               15.9 +/-    1.99      41.2 +/-    1.99  0.090 / 0.250
G11     47.4           22.8               10.2 +/-    0.62      21.0 +/-    0.62  0.030 / 0.060
G13     261.0          35.8               14.2 +/-    1.32      22.2 +/-    1.32  0.030 / 0.050
G15     292.6          16.6               10.9 +/-    2.27      26.1 +/-    2.27  0.180 / 0.420
G17     260.3          77.2               14.2 +/-    0.38      14.5 +/-    0.38  0.180 / 0.540
G18     40.7           11.2               10.5 +/-    2.12      28.6 +/-    2.12  0.040 / 0.070
G19     232.4          51.5               15.5 +/-    0.71      19.2 +/-    0.71  0.050 / 0.060
G28     28.5           58.7               12.3 +/-    0.35      14.1 +/-    0.35  0.030 / 0.030
G30     143.7          49.8               14.2 +/-    1.39      17.9 +/-    1.39  0.030 / 0.030